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1.


    Bikbaev, R. G.
    Hyperbolic metamaterial for the Tamm plasmon polariton application / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev // J. Opt. Soc. Am. B. - 2020. - Vol. 37, Is. 8. - P. 2215-2220, DOI 10.1364/JOSAB.394935. - Cited References: 51. - Russian Foundation for Basic Research (18-32-00053, 19-42-240004, 19-52-52006) . - ISSN 0740-3224. - ISSN 1520-8540
РУБ Optics
Рубрики:
PHOTONIC CRYSTAL
   PERFECT ABSORBER

   STATES

   HETEROSTRUCTURES

Аннотация: The possibility of using a hyperbolic metamaterial to form conventional and epsilon-near-zero Tamm plasmon polaritons in the near-infrared and visible spectral ranges is demonstrated. The spectral properties of the hyperbolic metamaterial are investigated in the framework of the effective medium theory and confirmed by the transfer matrix method. It is found that at the oblique incidence of light onto a structure, the I-type hyperbolic metamaterial can be implemented, while II-type cannot. The sensitivity of the epsilon-near-zero wavelength to the variation in the angle of light incidence for TE and TM waves is demonstrated. It is shown that both the high-quality and broadband Tamm plasmon polaritons are excited in the investigated structures.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Бикбаев, Рашид Гельмединович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-32-00053, 19-42-240004, 19-52-52006]
}
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2.


   
    Monoclinic SmAl3(BO3)4: synthesis, structural and spectroscopic properties / A. S. Oreshonkov, N. P. Shestakov, M. S. Molokeev [et al.] // Acta Crystallogr. B. - 2020. - Vol. 76. - P. 654-660, DOI 10.1107/S2052520620008781. - Cited References: 38. - Funding for this research was provided by: Russian Foundation for Basic Research (grant Nos. 18-03-00750, 18-05-00682 and 18-32-20011 to AO) . - ISSN 2052-5206
   Перевод заглавия: Моноклинный SmAl3(BO3)4: синтез, структура и спектроскопические свойства
РУБ Chemistry, Multidisciplinary + Crystallography
Рубрики:
Optical-properties
   Luminescence

   Spectra

   Crystals

   Sm

Кл.слова (ненормированные):
IR spectroscopy -- monoclinic structure -- luminescence -- Raman spectroscopy -- X-ray diffraction -- crystal structure
Аннотация: Single crystals of SmAl3(BO3)4 were synthesized by the group growth on seeds method. The crystal structure was solved using a single-crystal experiment and the purity of the bulk material was proved by the Rietveld method. This borate crystallizes in the monoclinic C2/c space group with unit-cell parameters a = 7.2386 (3), b = 9.3412 (5), c = 11.1013 (4) Å and β = 103.2240 (10)°. IR and Raman spectroscopic analyses confirmed the monoclinic structure of SmAl3(BO3)4. Under 532.1 nm excitation, luminescence spectra exhibit bands assignable to the transitions from 4G5/2 to 6H5/2, 6H7/2, 6H9/2 and 6H11/2. The similarity of the luminescence spectra of the trigonal and monoclinic poly­morphs is explained by the minor role of Sm—O bond distortion and the primary role of rotational distortion of SmO6 octa­hedra. The smaller covalency of the Sm—O bond in alumoborates is deduced in comparison with galloborates. Calorimetric measurements did not reveal high-temperature structural phase transitions up to a temperature of 720 K.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Mol Spect, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Engn & Construct, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Sch Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Coherent Opt, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Radiospect & Spintron, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk 630090, Russia.
Fed Res Ctr KSC SB RAS, Dept Mol Elect, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660074, Russia.
Tyumen State Univ, Dept Inorgan & Phys Chem, Tyumen 625003, Russia.
Ind Univ Tyumen, Dept Gen & Special Chem, Tyumen 625000, Russia.

Доп.точки доступа:
Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Shestakov, N. P.; Шестаков, Николай Петрович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович; Adichtchev, S. V.; Pugachev, A. M.; Nemtsev, I. V.; Немцев, Иван Васильевич; Pogoreltsev, E. I.; Погорельцев, Евгений Ильич; Denisenko, Y. G.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-03-00750, 18-05-00682, 18-32-20011]
}
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3.


   
    Chiral optical Tamm states at the interface between a Dye-doped cholesteric liquid crystal and an anisotropic mirror / A. Yu. Avdeeva, S. Ya. Vetrov, R. G. Bikbaev [et al.] // Materials. - 2020. - Vol. 13, Is. 15. - Ст. 3255, DOI 10.3390/ma13153255. - Cited References: 44. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by Russian Foundation for Basic Research, project No. 19-52-52006 . - ISSN 1996-1944
РУБ Materials Science, Multidisciplinary
Рубрики:
PHASE
   POLARIZATION

   MODES

Кл.слова (ненормированные):
localization of light -- photonic crystals -- chirality -- dye-doped cholesteric liquid crystal -- optical Tamm states -- resonant frequency dispersion
Аннотация: The resonant splitting of optical Tamm state numerically is demonstrated. The Tamm state is localized at the interface between a resonant chiral medium and a polarization-preserving anisotropic mirror. The chiral medium is considered as a cholesteric liquid crystal doped with resonant dye molecules. The article shows that the splitting occurs when dye resonance frequency coincides with the frequency of the Tamm state. In this case the reflectance, transmittance, and absorptance spectra show two distinct Tamm modes. For both modes, the field localization is at the interface between the media. The external field control of configurable optical and structural parameters paves the way for use in tunable chiral microlaser.

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Публикация в сборнике Soft photonic crystals and metamaterials [Текст] / ed., pref.: I. V. Timofeev, W. Lee, 2022. - VII с. ; 127 с. (Введено оглавление)

Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Avdeeva, A. Yu.; Авдеева, Анастасия Юрьевна; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Pyatnov, M. V.; Пятнов, Максим Владимирович; Rudakova, N. V.; Рудакова, Наталья Викторовна; Timofeev, I. V.; Тимофеев, Иван Владимирович; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [19-42-240004]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52006]
}
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4.


   
    Light interference in a hybrid-aligned nematic layer with nonordered surface disclination lines / A. M. Parshin, A. V. Barannik, V. Y. Zyryanov, V. F. Shabanov // J. Opt. Soc. Am. B. - 2020. - Vol. 37, Is. 7. - P. 2053-2057, DOI 10.1364/JOSAB.395976. - Cited References: 19 . - ISSN 0740-3224. - ISSN 1520-8540
РУБ Optics
Рубрики:
LIQUID-CRYSTAL
   SCATTERING

   DEFECTS

   DOMAINS

Аннотация: The propagation of a laser beam through a hybrid-aligned nematic layer with a surface disclination line has been investigated. A model of the light interference has been developed to consider the scattering by the structural inhomogeneities. The analytical expression that includes the factor characterizing an exponential decrease in the light scattering has been obtained. The dependence of the intensity of light transmitted through the layer on the magnetic field has been measured. The dependence has been accompanied by the interference oscillations. The theoretical expression is consistent with the experiment, which confirms the correctness of the model concepts.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Parshin, A. M.; Паршин, Александр Михайлович; Barannik, A. V.; Баранник, Алексей Владимирович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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5.


   
    Enhanced cyan emission and optical tuning of Ca3Ga4O9:Bi3+ for high-quality full-spectrum white light-emitting diodes / D. J. Liu, X. H. Yun, G. G. Li [et al.] // Adv. Opt. Mater. - 2020. - Vol. 8, Is. 22. - Ст. 2001037, DOI 10.1002/adom.202001037. - Cited References: 55. - This work was financially supported by the National Natural Science Foundation of China (NSFC No. 51932009, 51720105015, 51672265, 51672266, 51672257 and 51672259), the Key Research Program of Frontier Sciences, CAS (Grant No. YZDY-SSW-JSC018), Science and Technology Cooperation Project between Chinese and Australian Governments (2017YFE0132300), the Jiangmen Innovative Research Team Program (2017), and the Major Program of Basic Research and Applied Research of Guangdong Province (2017KZDXM083) . - ISSN 2195-1071
   Перевод заглавия: Улучшенное голубое излучение и оптическая настройка Ca3Ga4O9:Bi3+ для получения высококачественных белых светодиодов полного спектра
РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
ENERGY-TRANSFER
   TUNABLE LUMINESCENCE

   PHOSPHOR

   CRYSTAL

   MODULATION

Кл.слова (ненормированные):
cyan-emitting phosphors -- full-spectrum white lighting -- optical tuning -- single-phased white light-emitting diodes
Аннотация: Highly efficient cyan‐emitting phosphor materials are indispensable for closing the cyan gap in spectra of the traditional phosphor‐converted white light‐emitting diodes (WLEDs) to achieve high‐quality full‐spectrum white lighting. In this work, bright cyan‐emitting Ca3Ga4O9 (CGO):0.02Bi3+,0.07Zn2+ phosphor is developed to bridge the cyan gap. Such a Bi3+,Zn2+ codoping enhances the cyan emission of CGO:0.02Bi3+ by 4.1 times due to the influence of morphology and size of phosphor particles, charge compensation and lattice distortion. Interestingly, codoping La3+ ions into the current system can achieve a photoluminescence tuning of CGO:0.02Bi3+ from cyan to yellowish‐green by crystallographic site engineering. Besides, Bi3+–Eu3+ energy transfer is successfully realized in CGO:0.02Bi3+,0.07Zn2+,nEu3+ phosphors and the emission color tuning from cyan to orange is observed. The investigation of thermal quenching behaviors reveals that the incorporation of Zn2+ and La3+ improves the thermal stability of CGO:0.02Bi3+. Finally, CGO:0.02Bi3+,0.07Zn2+,0.10Eu3+ phosphor is employed to obtain a single‐phased warm WLED device. A full‐spectrum WLED device with remarkable color rendering index (Ra) of 97.4 and high luminous efficiency of 69.72 lm W−1 is generated by utilizing CGO:0.02Bi3+,0.07Zn2+ phosphor. This result suggests the important effect of CGO:0.02Bi3+,0.07Zn2+ phosphor on closing the cyan gap, providing new insights of cyan‐emitting phosphors applied in full‐spectrum white lighting.

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Держатели документа:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China.
Univ Sci & Technol China, Sch Appl Chem & Engn, Hefei 230026, Peoples R China.
China Univ Geosci, Fac Mat Sci & Chem, Engn Res Ctr Nanogeomat, Minist Educ, Wuhan 430074, Peoples R China.
RAS, SB, Lab Crystal Phys, Kirensky Inst Phys,Fed Res Ctr,KSC, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Shandong Univ, Sch Mat Sci & Engn, Jinan 266071, Peoples R China.
Wuyi Univ, Sch Appl Phys & Mat, Jiangmen 529020, Guangdong, Peoples R China.

Доп.точки доступа:
Liu, Dongjie; Yun, Xiaohan; Li, Guogang; Dang, Peipei; Molokeev, M. S.; Молокеев, Максим Сергеевич; Lian, Hongzhou; Shang, Mengmeng; Lin, Jun
}
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6.


   
    Thermometry and up-conversion luminescence of Ln3+ (Ln = Er, Ho, Tm)-doped double molybdate LiYbMo2O8 / X. Y. Yun, J. Zhou, Y. H. Zhu [et al.] // J. Mater. Sci.: Mater. Electron. - 2020. - Vol. 31, Is. 21. - P. 18370-18380, DOI 10.1007/s10854-020-04382-8. - Cited References: 41. - This work is supported by the National Natural Science Foundation of China (No. 21576002 and 61705003) and Beijing Technology and Business University Research Team Construction Project (No. PXM2019_014213_000007) . - ISSN 0957-4522. - ISSN 1573-482X
   Перевод заглавия: Термометрия и апконверсионная люминесценции двойного молибдата LiYbMo2O8, легированного Ln (3+) (Ln = Er, Ho, Tm)
РУБ Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
TEMPERATURE SENSING BEHAVIOR
   OPTICAL THERMOMETRY

   EMISSION

   PHOSPHOR

Аннотация: The discovery of stable and highly sensitive up-conversion (UC) phosphors using the fluorescence intensity ratio (FIR) is a significant challenge in the field of optical temperature sensor. Er3+/Ho3+/Tm3+-doped LiYbMo2O8 UC phosphors with excellent luminescence properties were successfully synthesized through a high-temperature solid-state reaction, and the crystal structure and UC luminescence properties were discussed in detail. The UC process has been investigated by spectra pump power dependence and further explained via the energy level diagram. All emission processes about Er3+ ions and Ho3+ ions are two-photon processes and the blue emission process about Tm3+ ions is a combination of two-photon process and three-photon process. Thermal sensing performances depended on FIR technology were estimated and the sensitivities of LiYb1−xMo2O8:xLn3+ included absolute sensitivity (Sa) and relative sensitivity (Sr) can produce particular change rules with the temperature, which can serve as excellent candidates for applications in optical temperature sensing. With the increase of temperature, the maximum values of Sr of LiYb1−xMo2O8:xLn3+ are 1.16% K−1 (0.05Er3+), 0.25% K−1 (0.01Ho3+), and 0.51% K−1 (0.01Tm3+), respectively. In addition, the Sa value of LiYb0.95Mo2O8:0.05Er3+ phosphor will reach the maximum (1.08% K−1) at 475 K, while the maximum values of Sa of LiYb0.99Mo2O8:0.01Ho3+ and LiYb0.99Mo2O8:0.01Tm3+ are 0.16% K−1, 0.14% K−1.

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Держатели документа:
Beijing Technol & Business Univ, Sch Sci, Beijing 100048, Peoples R China.
RAS, Fed Res Ctr, Kirensky Inst Phys, Lab Crystal Phys,KSC,SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Yun, Xiangyan; Zhou, Jun; Zhu, Yaohui; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jia, Yetong; Wei, Chao; Xu, Denghui; Sun, Jiayue
}
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7.


   
    Structural analysis and optical temperature sensing performance of Eu3+-doped Ba3In(PO4)3 / G. Q. Zhang, M. S. Molokeev, Q. C. Ma [et al.] // CrystEngComm. - 2020. - Vol. 22, Is. 35. - P. 5809-5817, DOI 10.1039/d0ce00997k. - Cited References: 52. - This work was supported by the National Natural Science Foundation of China (Grant No. 51802172) and the Qinghai Provincial Natural Science Foundation for Young Scholars (No. 2018-ZJ-957Q) . - ISSN 1466-8033
   Перевод заглавия: Структурный анализ и эффективность оптического измерения температуры Ba3In(PO4)3, легированного Eu3+
РУБ Chemistry, Multidisciplinary + Crystallography
Рубрики:
FLUORESCENCE INTENSITY RATIO
   UP-CONVERSION EMISSIONS

   RARE-EARTH IONS

Аннотация: Eu3+-Doped Ba3In(PO4)3 was synthesized through a high-temperature solid-phase method. According to the structure refinement based on X-ray diffraction and density functional theory, the crystal and energy band structures of Ba3In(1−x)(PO4)3:xEu3+ were studied and analyzed in detail. The effect of Eu3+ doping concentrations on emission was studied at an excitation wavelength of 393 nm. For the material Ba3In(1−x)(PO4)3:xEu3+(x = 0.01–0.30), the optimal doping level is confirmed to be 0.18. Due to the thermal quenching differences of Eu3+ at the 5D0 and 5D1 energy levels, and based on the temperature-variable fluorescence intensity ratio between emission peaks, the optical temperature measurement performance of this material in the temperature range from 298.15 K to 623.15 K was characterized, and the maximum absolute and relative sensor sensitivities (Sa and Sr) were determined to be 0.1002 K−1 and 4.058%, respectively. With temperature as the only variable, the color of the phosphor changes from red to yellow light with rising temperature. Besides, Sa and Sr values of this phosphor are comparable to other sensing materials. The results indicate that Eu3+-doped Ba3In(PO4)3 phosphors have great potential to be applied in optical temperature sensing.

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Держатели документа:
Qinghai Univ, Qinghai Prov Engn Res Ctr High Performance Light, Qinghai Prov Key Lab New Light Alloys, Xining 810016, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Zhang, Guangqing; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ma, Qianchao; Yang, Xuening; Han, Shuiquan; Chen, Q.i.; Zhong, Binnian; Ma, Bin
}
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8.


   
    Effect of composition on the optical and photocatalytic properties of visible light responsive materials Bi26-xMgxO40 / D. S. Shtarev, R. Kevorkyants, M. S. Molokeev, A. V. Shtareva // Inorg. Chem. - 2020. - Vol. 59, Is. 12. - P. 8173-8183, DOI 10.1021/acs.inorgchem.0c00486. - Cited References: 41. - This study was supported by a grant from the Russian Science Foundation (Project No 19-73-10013). The authors acknowledge the help of the Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS in conducting the study and offering their research equipment. The authors also thank the Research Center on Nanophotonics, the Center for Physical Methods of Surface Investigation (Dr. Alexandra Koroleva), and the Computing Centre of the Saint-Petersburg State University. R.K. acknowledges financial support from a grant from the Saint-Petersburg State University (Pure ID 39054581) . - ISSN 0020-1669
   Перевод заглавия: Влияние состава на оптические и фотокаталитические свойства новых материалов Bi26-xMgxO40, реагирующих на видимый свет
Аннотация: We report the synthesis and the crystal and electronic structure as well as the optical and photocatalytic properties of novel photoactive materials of the general formula Bi26–xMgxO40. Two compounds with compositions of Bi24.28(3)Mg1.72(3)O40 and Bi24.05(3)Mg1.95(3)O40 are synthesized using the pyrolytic method. According to X-ray diffraction analysis, the materials are monocrystalline species. Their electronic bandgaps determined from Tauc plots are 2.41 eV [Bi24.28(3)Mg1.72(3)O40] and 2.69 eV [Bi24.05(3)Mg1.95(3)O40]. Keeping in mind that optical bandgaps are typically larger than their electronic counterparts, we find that the bismuthate bandgaps match well that of Bi24Mg2O40 (2.26 eV) predicted by density functional theory. Apparently, the synthesized bismuthates are indirect bandgap semiconductors just like Bi24Mg2O40. Both materials demonstrate nearly identical luminescence spectra. Their luminescence emission at 620 nm is most efficiently excited by 365 nm light. The materials’ photocatalytic properties are evaluated in a visible light-induced photocatalytic phenol degradation reaction. Rather low activity of both compounds is detected. However, Bi24.05(3)Mg1.95(3)O40 is ∼2 times more photocatalytically active than Bi24.28(3)Mg1.72(3)O40, which is associated with a higher Bi5+ content in the former.

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Держатели документа:
Yu. A. Kosygin Institute of Tectonics and Geophysics FEB RAS, Khabarovsk, 680000, Russian Federation
Saint-Petersburg State University, Laboratory Photoactive Nanocomposite Materials, St Petersburg, 199034, Russian Federation
Far Eastern State Transport University, Khabarovsk, 680000, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Shtarev, D. S.; Kevorkyants, R.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Shtareva, A. V.
}
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9.


    Vetrov, S. Ya.
    Localized modes in chiral photonic structures / S. Y. Vetrov, I. V. Timofeev, V. F. Shabanov // Phys. Usp. - 2020. - Vol. 63, Is. 1. - P. 33-56, DOI 10.3367/UFNe.2018.11.038490. - Cited References: 251 . - ISSN 1063-7869. - ISSN 1468-4780
Рубрики:
CHOLESTERIC LIQUID-CRYSTAL
   CONTROLLED LIGHT-SCATTERING

   SCULPTURED THIN-FILMS

Кл.слова (ненормированные):
light localization -- photonic crystals -- chirality -- chiral nematic liquid crystal -- Pancharatnam-Berry geometric phase -- avoided crossing of coupled modes -- cholesteric liquid crystal -- optical Tamm states -- nanocomposite -- resonant frequency dispersion -- hybrid modes
Аннотация: We discuss chiral structures in self-organizing, artificial, and biological materials. A review of experimental studies and recent advances in the localization of light in chiral structures is given. The behavior of polarized resonant modes in such structures is examined using the example of a one-dimensional photonic crystal containing liquid crystal materials. The anomalous spectral shifts of transmission peaks are interpreted as the contribution of the geometric phase caused by the twisting of the layers of the liquid crystal. The optical Tamm state localized at the boundary between chiral and nonchiral mirrors in the form of a cholesteric layer and a polarization-preserving anisotropic mirror is analytically and numerically described. Considerable attention is paid to the presentation of the properties of localized optical modes in the cholesteric with a resonant metal-dielectric nanocomposite. New possibilities for controlling the properties of the photonic structure are noted, due to the combination of the dispersion of the resonant medium and the intrinsic dispersion of the cholesteric. Attention is focused on controlled hybrid modes in the cholesteric structure formed by the coupling of localized modes. Possible applications and further ways of developing the concept of chiral photonic structures are deliberated.

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Публикация на русском языке Ветров, Степан Яковлевич. Локализованные моды в хиральных фотонных структурах [Текст] / С. Я. Ветров, И. В. Тимофеев, В. Ф. Шабанов // Успехи физ. наук. - 2020. - Т. 190 № 1. - С. 37-62

Держатели документа:
Russian Acad Sci, Siberian Branch, FRC KSC, Kirensky Inst Phys, Akademgorodok 50,Str 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Pr Svobodnyi 79, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, V. F.; Шабанов, Василий Филиппович; Ветров, Степан Яковлевич
}
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10.


    Gardymova, Anna P..
    Optical textures and orientational structures in cholesteric droplets with conical boundary conditions / A. P. Gardymova, M. N. Krakhalev, V. Y. Zyryanov // Molecules. - 2020. - Vol. 25, Is. 7. - Ст. 1740, DOI 10.3390/molecules25071740. - Cited References: 53. - The authors are grateful for the financial support by the Russian Science Foundation (grant No. 18-72-10036). . - ISSN 1420-3049
РУБ Biochemistry & Molecular Biology + Chemistry, Multidisciplinary
Рубрики:
DISPERSED LIQUID-CRYSTALS
   CHIRAL NEMATIC DROPLETS

   IONIC MODIFICATION

Кл.слова (ненормированные):
cholesteric liquid crystal -- droplet -- optical texture -- orientational structure -- conical surface anchoring -- topological defect
Аннотация: Cholesteric droplets dispersed in polymer with conical boundary conditions have been studied. The director configurations are identified by the polarising microscopy technique. The axisymmetric twisted axial-bipolar configuration with the surface circular defect at the droplet’s equator is formed at the relative chirality parameter N0≤2.9 . The intermediate director configuration with the deformed circular defect is realised at 2.9
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Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Russian Science FoundationRussian Science Foundation (RSF) [18-72-10036]
}
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11.


   
    Optical properties of the HoGa3(BO3)4 crystal: experiment and ab initio calculation / S. N. Krylova, A. S. Aleksandrovsky, E. M. Roginskii [et al.] // Ferroelectrics. - 2020. - Vol. 559, Is. 1. - P. 135-140, DOI 10.1080/00150193.2020.1722015. - Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (grant No 18-02-00754) . - ISSN 0015-0193
Кл.слова (ненормированные):
HoGa3(BO3)4 -- ab initio calculation -- absorption spectrum -- band structure
Аннотация: Single crystal of HoGa3(BO3)4 has been grown using solution-melt synthesis. The optical band gap determined from the measured absorption spectrum is due to direct allowed transition and equals to 4.14 eV. The optical properties of this crystal are calculated by the plane-wave pseudo-potential method based on density functional theory. The structure of the crystal has been optimized. The electronic structure of HoGa3(BO3)4 is calculated. The experimental and theoretical fundamental absorption spectra are compared. The calculated bandgap is in good agreement with the experimental data.

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Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Ioffe Institute, St. Petersburg, Russian Federation
St. Petersburg State University, St. Petersburg, Russian Federation
Moscow Institute of Physics and Technology, Dolgoprudny, Russian Federation

Доп.точки доступа:
Krylova, S. N.; Крылова, Светлана Николаевна; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Roginskii, E. M.; Krylov, A. A.; Gudim, I. A.; Гудим, Ирина Анатольевна; Vtyurin, A. N.; Втюрин, Александр Николаевич
}
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12.


   
    Core-hole localization and ultra-fast dissociation in SF6 / V. Ekholm, G. S. Chiuzbaian, C. Sathe [et al.] // J. Phys. B. - 2020. - Vol. 53, Is. 18. - Ст. 185101, DOI 10.1088/1361-6455/aba204. - Cited References: 36. - This work was supported by the Swedish Research Council (VR). The calculations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC). FG acknowledges support within the Russian Science Foundation (Project No. 16-12-10109) . - ISSN 0953-4075. - ISSN 1361-6455
РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
X-RAY-EMISSION
   SYMMETRY-BREAKING

   AB-INITIO

   SPECTROSCOPY

   SPECTRA

Кл.слова (ненормированные):
SF6 -- resonant inelastic x-ray scattering -- symmetry selection rules -- ultrafast dynamics -- vibronic couplings
Аннотация: Resonant inelastic x-ray scattering spectra excited at the fluorine K resonances of SF6 have been recorded. While a small but significant propensity for electronically parity-allowed transitions is found, the observation of parity-forbidden electronic transitions is attributed to vibronic coupling that breaks the global inversion symmetry of the electronic wavefunction and localizes the core hole. The dependence of the scattering cross section on the polarization of the incident radiation and the scattering angle is interpreted in terms of local π/σ symmetry around the S–F bond. This symmetry selectivity prevails during the dissociation that occurs during the scattering process.

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Lund Univ, MAX IV Lab, Box 118, SE-22100 Lund, Sweden.
Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden.
Sorbonne Univ, F-75005 Paris, France.
CNRS, LCPMR, F-75005 Paris, France.
Synchrotron SOLEIL, LOrme Merisiers, BP 48, F-91192 Gif Sur Yvette, France.
Ctr Nacl Pesquisa Energia & Mat CNPEM, BR-10000 Campinas, Brazil.
Royal Inst Technol, Sch Biotechnol, Theoret Chem & Biol, S-10691 Stockholm, Sweden.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.

Доп.точки доступа:
Ekholm, V.; Chiuzbaian, G. S.; Sathe, C.; Nicolaou, A.; Guarise, M.; Simon, M.; Jaouen, N.; Luning, J.; Hague, C. F.; Gel'mukhanov, F.; Гельмуханов, Фарис Хафизович; Odelius, M.; Bjorneholm, O.; Rubensson, J-E; Swedish Research Council (VR)Swedish Research Council; Russian Science FoundationRussian Science Foundation (RSF) [16-12-10109]
}
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13.


    Ikonnikov, Denis A..
    Tailoring diffraction of light carrying orbital angular momenta / D. A. Ikonnikov, A. M. Vyunishev // Opt. Lett. - 2020. - Vol. 45, Is. 14. - P. 3905-3908, DOI 10.1364/OL.389019. - Cited References: 29. - Russian Science Foundation (19-12-00203). . - ISSN 0146-9592. - ISSN 1539-4794
   Перевод заглавия: Управление дифракцией пучков света с орбитальным угловым моментом
РУБ Optics
Рубрики:
OPTICAL VORTICES
   ENTANGLEMENT

   TWEEZERS

Аннотация: A unified approach to controlling the diffraction of light carrying orbital angular momenta (OAM) is developed and experimentally verified in this Letter. This approach allows one to specify not only the number of diffraction maxima, their spatial frequencies, and the intensity distribution between them, but also the OAM in each maximum. It is verified that the approach can be used for structuring both single and multiple beams carrying OAMs. Simulations reveal phase singularities in structured beams. In addition, the approach makes it possible to shape the light in regular and irregular two-dimensional arrays with addressing the OAMs at each site. This approach offers new opportunities for singular optics.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Иконников, Денис Андреевич; Russian Science FoundationRussian Science Foundation (RSF) [19-12-00203]
}
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14.


    Паршин, Александр Михайлович.
    Оптическое пропускание доменной структуры нематика на поверхности полимера в магнитном поле / А. М. Паршин, А. В. Баранник // Жидк. кристаллы и их практич. использ. - 2020. - Т. 20, Вып. 2. - С. 62-68 ; Liq. Cryst. Appl., DOI 10.18083/LCAppl.2020.2.62. - Библиогр.: 20 . - ISSN 1991-3966
   Перевод заглавия: Optical transmission of the nematic domain structure on the polymer surface in a magnetic field
РУБ Crystallography
Рубрики:
LIGHT-SCATTERING
   DEFECTS

Кл.слова (ненормированные):
нематический жидкий кристалл -- поликарбонат -- доменная структура -- интерференция света -- рассеяние света -- магнитное поле -- nematic liquid crystal -- polycarbonate -- domain structure -- light -- interference -- light scattering -- magnetic field
Аннотация: Исследовано распространение лазерного луча через слой гибридно-упорядоченного нематика с поверхностной линией дисклинации, состоящий из доменов с радиальной конфигурацией нематического директора на пленке поликарбоната. Ориентационная структура в объеме домена трансформируется в планарную одноосную, задаваемую линией дисклинации, либо в гомеотропную под действием магнитного поля. Получена зависимость интенсивности света, прошедшего через слой, от магнитного поля, прикладываемого перпендикулярно поверхности полимера. Оптическое пропускание сопровождалось интерференционными минимумами и максимумами. Представлена модель интерференции света, основанная на двулучепреломлении, учитывающая рассеяние на ориентационно-структурных неоднородностях доменного ансамбля. Из рассмотрения свободной энергии жидкого кристалла и эффектов двулучепреломления выведено аналитическое выражение, устанавливающее зависимость между интенсивностью света и напряженностью магнитного поля, совпадающее с экспериментом.
The propagation of a laser beam through a layer of a hybrid ordered nematic on a polycarbonate film is studied. The nematic has a surface disclination line consisting of domains with a radial configuration of the nematic director. The orientational structure in the domain volume can be transformed into a planar uniaxial structure defined by a disclination line or into a homeotropic one under the influence of a magnetic field. The dependence of the light intensity transmitted through the layer on the magnetic field applied perpendicular to the polymer surface is obtained. Optical transmission was accompanied by interference minima and maxima. Light interference model based on birefringence which takes into account scattering by the orientation-structural inhomogeneities of the domain ensemble is presented. Considering the analysis of the liquid crystal free energy and the birefringence effects, an analytical expression is derived. It establishes the relationship between the light intensity and the magnetic field strength, which coincides with the experiment.

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Институт физики им. Л. В. Киренского, Федеральный исследовательский центр «Красноярский научный центр Сибирского отделения Российской академии наук», Академгородок, д. 50, 660036 Красноярск, Россия
Сибирский федеральный университет, пр. Свободный, 79, 660041 Красноярск, Россия

Доп.точки доступа:
Баранник, Алексей Владимирович; Barannik, A. V.; Parshin, A. M.

}
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15.


   
    Влияние строения на оптические свойства эпикулярного воска голубой ели (Picea pungens) / Е. Р. Буханов, А. В. Шабанов, М. Н. Крахалев [и др.] // Ученые зап. физ. фак-та МГУ. - 2019. - № 5. - Ст. 1950502. - Библиогр.: 36 . - ISSN 2307-9665
   Перевод заглавия: The effect of the structure on the optical properties of epicular blue spruce wax (Picea pungens)
Кл.слова (ненормированные):
фотонный кристалл -- дефектная мода -- изоляция воскового слоя -- иризация -- флуоресценция -- photonic crystal -- defect mode -- wax isolation -- irisation -- fluorescence
Аннотация: Выполнено исследование морфологических и оптических характеристик с эпикулярного воскового слоя голубой ели (Picea pungens). Методом сканирующей электронной микроскопии выявлены структурные единицы – трубочки диаметром 150-200нм и длиной 3-5 мкм. Обнаружен эффект иризации от доменов воскового слоя. В отраженном свете домены имею голубую окраску, при наблюдении в проходящем свете приобретают розоватый оттенок. Эти оптические характеристики являются основными признаками фотоннокристаллической структурой. Проведено численное моделирование спектра пропускания с выявленными структурными оптическими параметрами с использованием метода трансфер матриц. Спектр максимума флюоресценции совпадает с дефектной модой рассчитанного спектра пропускания.
The study of morphological and optical characteristics of the epicular wax layer of blue spruce (Picea pungens). The method of scanning electron microscopy revealed structural units - tubes with a diameter of 150-200 nm and a length of 3-5 microns. An iridescence effect from the wax layer domains has been detected. In the reflected light, the domains have a blue color, when observed in transmitted light acquire a pinkish tint. These optical characteristics are the main features of the photonic crystal structure. A numerical simulation of the transmission spectrum with the identified structural optical parameters was carried out using the transfer matrix method. The spectrum of the maximum fluorescence coincides with the defect mode of the calculated transmission spectrum.

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Держатели документа:
Институт физики имени Л. В. Киренского ФИЦ КНЦ СО РАН, Россия, 660036, Красноярск
ФИЦ КЦН СО РАН, Россия, 660036, Красноярск

Доп.точки доступа:
Буханов, Евгений Романович; Bukhanov, E. R.; Шабанов, Александр Васильевич; Shabanov, A. V.; Крахалев, Михаил Николаевич; Krakhalev, M. N.; Волочаев, Михаил Николаевич; Volochaev, M. N.; Гуревич, Юрий Леонидович
}
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16.


    Bikbaev, R. G.
    Hybrid Tamm and surface plasmon polaritons in resonant photonic structure / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev // J. Quant. Spectrosc. Radiat. Transf. - 2020. - Vol. 253. - Ст. 107156, DOI 10.1016/j.jqsrt.2020.107156. - Cited References: 58. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by a joint project of the Russian Foundation for Basic Research, project No. 19-52-52006, and the Taiwan Ministry of Science and Technology, project No. 108-2923E-009-003-MY3 . - ISSN 0022-4073
Кл.слова (ненормированные):
Tamm plasmon polariton -- Surface plasmon polariton -- Metal-dielectric nanocomposite -- Hybrid mode -- Optical sensor
Аннотация: Hybrid modes originating from the coupling of the Tamm and surface plasmon polaritons excited in a one-dimensional resonant photonic structure are demonstrated. The structure represents a photonic crystal bounded by a nanocomposite film consisting of a transparent matrix and silver nanoparticles uniformly distributed over its volume. In comparison with structures on planar metal films the volume concentration and shape of nanoparticles are of great help in configuring the hybrid mode properties, including their wavelength and splitting. Also the radiation incidence angle variation opens the possibility of fine-tuning the energy spectra of the structure. We demonstrate the high-sensitivity of optical sensors based on the resonant photonic structure.

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Держатели документа:
L.V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS660036, Krasnoyarsk, Russian Federation
Siberian Federal University660041, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Бикбаев, Рашид Гельмединович
}
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17.


   
    Two-dimensional Talbot effect of the optical vortices and their spatial evolution / D. A. Ikonnikov, S. A. Myslivets, M. N. Volochaev [et al.] // Sci. Rep. - 2020. - Vol. 10, Is. 1. - Ст. 20315, DOI 10.1038/s41598-020-77418-y. - Cited References: 42. - This work was supported by the Russian Science Foundation (Grant # 19-12-00203). The authors acknowledge the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, for fabricating the 2D grating sample and A.I. Zaitsev for optical microscopy of the sample . - ISSN 2045-2322
Аннотация: We report on the experimental and theoretical study of the near-field diffraction of optical vortices (OVs) at a two-dimensional diffraction grating. The Talbot effect for the optical vortices in the visible range is experimentally observed and the respective Talbot carpets for the optical vortices are experimentally obtained for the first time. It is shown that the spatial configuration of the light field behind the grating represents a complex three-dimensional lattice of beamlet-like optical vortices. A unit cell of the OV lattice is reconstructed using the experimental data and the spatial evolution of the beamlet intensity and phase singularities of the optical vortices is demonstrated. In addition, the self-healing effect for the optical vortices, which consists in flattening of the central dip in the annular intensity distribution, i.e., restoring the image of the object plane predicted earlier is observed. The calculated results agree well with the experimental ones. The results obtained can be used to create and optimize the 3D OV lattices for a wide range of application areas.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Ikonnikov, D. A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович
}
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18.


    Zhandun, V. S.
    Ab initio comparative study of the magnetic, electronic and optical properties of AB2O4 (A, B= Mn, Fe) spinels / V. S. Zhandun, A. V. Nemtsev // Mater. Chem. Phys. - 2021. - Vol. 259. - Ст. 124065, DOI 10.1016/j.matchemphys.2020.124065. - Cited References: 32. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project № 19-42-240016: «Control of structural, magnetic, electronic, and optical properties by pressure and intercalation into functional compounds with a spinel structure containing 3d and 4f ions » The calculations were performed with the computer resources of “Complex modeling and data processing research installations of mega-class” SRC “Kurchatovsky Institute” (http://ckp.urcki.ru) . - ISSN 0254-0584. - ISSN 1879-3312
Кл.слова (ненормированные):
Ab initio calculations -- Spinel -- Magnetic and electronic properties -- Optical properties -- Inverse structure -- Manganese and iron oxides
Аннотация: The comparison of the magnetic, electronic, and optical properties of the spinel transition-metal oxides AB2O4 (A, B = Fe, Mn) and their relationship with the structure and composition were studied within DFT-GGA + U approximation. The spinels were considered both in the normal and inverse structure. We have found that regardless of composition and structure, the studied spinels are ferrimagnetic with antiparallel magnetic moments on A- and B-site cations. Electronic and structural properties of spinels depend on the composition: FeMn2O4 has a tetragonal structure and half-metallic properties; however, in the inverse FeMn2O4, the bandgap opens for the spin-up channel. MnFe2O4 is a cubic insulator with a bandgap of about 1.5 eV, which decreases in the inverse structure. The superexchange constants estimate within the simple indirect coupling model and have values close to the experimental ones. The total magnetization of FeMn2O4 is drop-down to zero under hydrostatic pressure above 60 GPa due to the strong dependence of the magnetic moment of octahedral manganese ion on the pressure. The microscopic mechanisms of the relationship between the structure, composition and properties are studied.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Science Centre, Siberian Branch of the Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Nemtsev, A. V.; Немцев, А. В.; Жандун, Вячеслав Сергеевич
}
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19.


    Maximova, O. A.
    Possibility of using analytical method to calculate magneto-optical parameter from magneto-ellipsometry measurements data / O. A. Maximova, S. G. Ovchinnikov // The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. IV.31.13p. - P. 122. - This study was supported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation. . - ISBN 978-5-8044-1698-1

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Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Максимова, Ольга Александровна; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
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20.


   
    Magneto-optical properties of Ge nanoparticles in the GeO matrix / A. V. Sherepa, V. N. Zabluda, K. N. Astankova [et al.] // The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. II.31.02p. - P. 77 . - ISBN 978-5-8044-1698-1

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Доп.точки доступа:
Sherepa, A. V.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Astankova, K. N.; Azarov, I. A.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
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