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    Structural and magnetic properties of Fe1−xCoxSe1.09 nanoparticles obtained by thermal decomposition / O. A. Li [et al.] // Mater. Res. Express. - 2015. - Vol. 2, No. 12. - Ст. 126501, DOI 10.1088/2053-1591/2/12/126501. - Cited References: 30. - This work is supported by the Ministry of Science and Technology of Taiwan (MOST103-2811-M-153 -001 and MOST102-2112-M-153 -002 -MY3). . - ISSN 2053-1591
   Перевод заглавия: Структурные и магнитные свойства наночастиц Fe1−xCoxSe1.09, полученных тепловым разложением

РУБ Materials Science, Multidisciplinary
Рубрики:
X-RAY-DIFFRACTION
   MOSSBAUER-SPECTROSCOPY
   CRYSTAL-STRUCTURES
   IRON SELENIDES
   SUPERCONDUCTIVITY
   FeSe
   MARCASITE
   PYRITE
Кл.слова (ненормированные):
nanoparticles -- chalcogenide -- iron-cobalt selenide -- ferrimagnetism -- paramagnetism -- Mossbauer spectroscopy
Аннотация: A series of Fe1−xCoxSe1.09 (x = 0 to ) nanoparticles were synthesized by thermal decomposition method. Particles in composition range Fe0.5Co0.5Se1.09 to CoSe1.09 crystallized in monoclinic structure of Co6.8Se8 , while FeSe1.09 crystallized in hexagonal structure of FeSe achavalite. Magnetization dependences on temperature and external magnetic field reveal complicated magnetic behavior and correspond to the sum of paramagnetic and superparamagnetic response. Mössbauer spectra contain several paramagnetic doublets with parameters corresponding to nonequivalent positions of divalent and trivalent iron cations with low spin. The nonequivalent positions appeared due to inhomogeneous distribution of Co ions or metal vacancies in iron surrounding.

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Доп.точки доступа:
Li, Oksana A.; Lin, Chun-Rong; Chen, Hung-Yi; Hsu, Hua-Shu; Wu, Kai-Wun; Tseng, Yaw-Teng; Bayukov, O. A.; Баюков, Олег Артемьевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Shih, Kun-Yauh
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Magnetic order in FeCr2S4-type chalcogenide spinels / F. J. Berry [et al.] // J. Phys.: Condens. Matter. - 2007. - Vol. 19, Is. 26. - Ст. 266204, DOI 10.1088/0953-8984/19/26/266204. - Cited References: 15 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
COLOSSAL-MAGNETORESISTANCE
TRANSITION
Кл.слова (ненормированные):
Doping (additives) -- Iron compounds -- Magnetization -- Magnetoresistance -- Mossbauer spectroscopy -- X ray absorption fine structure spectroscopy -- Chalcogenide spinels -- Low temperature magnetic behaviour -- Magnetic ordering temperature -- Thiospinels -- Chalcogenides
Аннотация: The thiospinels of composition FeCr2S4 and Fe1+xCr2-2xSnxS4 with 0 < x < 0.1 have been examined by means of extended x- ray absorption fine structure, Mossbauer spectroscopy and magnetoresistance techniques. The structural characterization shows that tin enters the spinel- related lattice as Sn4+ and occupies the octahedral B site. Appreciable magnetoresistance is observed in the temperature range 160 - 185 K which includes the magnetic ordering temperature. The effect of slight non- stoichiometry in FeCr2S4 and of tin doping is observed in the M r ossbauer spectra which show the Fe2+ ions to occupy the tetrahedral A sites. The M r ossbauer spectra recorded around the magnetic ordering temperature are sensitive to small ( 0.03 T) applied magnetic fields. The influence of tin on the low temperature magnetic behaviour is associated with the distribution of Cr3+, Sn4+ and Fe3+ ions around tetrahedral Fe2+ sites and vacancies in the anionic sublattice. An interpretation of the colossal magnetoresistance phenomena below TN is suggested.

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Держатели документа:
Open Univ, Dept Chem, Milton Keynes MK7 6AA, Bucks, England
Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow 119333, Russia
Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
Russian Acad Sci, Inst Inorgan & Gen Chem, Moscow 119907, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Department of Chemistry, Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
A V Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninsky avenue 59, Moscow 119333, Russian Federation
Department of Physics, University of Liverpool, Liverpool L69 3BX, United Kingdom
Institute of Inorganic and General Chemistry, Russian Academy of Sciences, Leninsky avenue 31, Moscow 119907, Russian Federation
L V Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Berry, F. J.; Dmitrieva, T. V.; Ovanesyan, N. S.; Lyubutin, I. S.; Thomas, M. F.; Sarkisyan, V. A.; Ren, X.; Aminov, T. G.; Shabunina, G. G.; Rudenko, V.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Dubinskaya, Y. L.
}
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On the two-phase magnetic state in a CuxZn1-xCr2Se4 cation-substituted chalcogenide spinel / A. D. Balaev [et al.] // Phys. Solid State. - 2001. - Vol. 43, Is. 6. - P. 1089-1092, DOI 10.1134/1.1378149. - Cited References: 8 . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: The region of the concentration magnetic phase transition in a CuxZn1-xCr2Se4 chalcogenide spinel in which the substituted ion concentration x smoothly varies from 0.1 to 0.2 with a step of 0.02 is thoroughly investigated. An anomalous behavior of the Curie temperature is observed. This anomaly is associated with the nucleation of ferromagnetically ordered microregions in the vicinity of Cr ions with an intermediate valence and subsequent long-range magnetic ordering at a critical Cu concentration in the range 0.12 x(c) 0.14. The possible coexistence of ferro- and antiferromagnetism in the same temperature range is revealed. (C) 2001 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Balaev, A. D.; Балаев, Александр Дмитриевич; Zhukov, E. G.; Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Popel, E. P.
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Bond formation effect on the g-factor of chalcogenide chromium spinels / V. N. Berzhanskii [et al.] // Fiz. Tverd. Tela. - 1982. - Vol. 24, Is. 3. - P. 945-948. - Cited References: 15 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS

Доп.точки доступа:
Berzhanskii, V. N.; Бержанский, Владимир Наумович; Gavrichkov, S. A.; Гавричков, Сергей Александрович; Ivanov, V. I.; Kalinnikov, V. T.
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Berzhanskii, V. N.
Electron-paramagnetic-res relaxation in chromium chalcogenide spinels / V. N. Berzhanskii, S. A. GAVRICHKOV, V. I. IVANOV // Fiz. Tverd. Tela. - 1982. - Vol. 24, Is. 7. - P. 2215-2218. - Cited References: 8 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS

Доп.точки доступа:
GAVRICHKOV, S. A.; IVANOV, V. I.; Бержанский, Владимир Наумович
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Valkov, V. V.
Phase-transition with valency changing in chalcogenide chromium spinels / V. V. Valkov, S. G. Ovchinnikov // Fiz. Tverd. Tela. - 1980. - Vol. 22, Is. 11. - P. 3418-3425. - Cited References: 18 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Val'kov, V. V.
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Conductivity, structural and magnetic properties of manganese chalcogenide films under anionic substitution by tellurium / O. B. Romanova [et al.] // Moscow International Symposium on Magnetism (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 4PO-I1-30. - P. 885

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Материалы симпозиума,
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Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Kharkov, A. M.; Харьков, Анатолий Михайлович; Demidenko, O. F.; Galyas, A. I.; Yanyshkevich, K. I.; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
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    CsCu5Se3: a copper-rich ternary chalcogenide semiconductor with nearly direct band gap for photovoltaic application / Z. Xia [et al.] // Chem. Mater. - 2018. - Vol. 30, Is. 3. - P. 1121-1126, DOI 10.1021/acs.chemmater.7b05104. - Cited References: 35. - The present work was supported by the National Natural Science Foundation of China (Grants 51722202, 91622125, 51572023, 51672023, 11774239, and U1530401), and Natural Science Foundation of Beijing (Grant 2172036). K.R.P. recognizes that this work was made possible by support from the National Science Foundation (Awards DMR-1608218 and DMR-1307698). X.Z. and S.H.W. acknowledge the support from National Key R&D Program of China (Grant 2016YFB0700700). . - ISSN 0897-4756
   Перевод заглавия: CsCu5Se3: богатый медью тройной халькогенидный полупроводник с почти прямой полосой пропускания для фотовольтаического применения
Кл.слова (ненормированные):
Sulfur compounds
Аннотация: Discovery of new semiconductor candidates with suitable band gaps is a challenge for optoelectronic application. A facile solvothermal synthesis of a new ternary chalcogenide semiconductor CsCu5Se3 is reported. The telluride CsCu5Te3 is also predicted to be stable. CsCu5Se3 is isostructural with CsCu5S3 (space group Pmma). The band gap calculations of these chalcogenide semiconductors using hybrid density functional theory indicate nearly direct band gaps, and their values (about 1.4 eV) were confirmed by the optical absorption spectroscopy. These alkali metal copper chalcogenides are interesting examples of copper-rich structures which are commonly associated with favorable photovoltaic application.

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Держатели документа:
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Department of Chemistry, Tsinghua University, Beijing, China
College of Electronic Science and Technology, Shenzhen University, Guangdong, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institut des Materiaux Jean Rouxel (IMN), Universite de Nantes, CNRS, 2 rue de la Houssiniere, Nantes, Cedex, France
Beijing Computational Science Research Center, Beijing, China
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, United States

Доп.точки доступа:
Xia, Z.; Fang, H.; Zhang, X.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Gautier, R.; Yan, Q.; Wei, S. -H.; Poeppelmeier, K. R.
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The alternating-sign magnetoresistance of polycrystalline manganese chalcogenide films / S. S. Aplesnin [et al.] // Semicond. Sci. Technol. - 2018. - Vol. 33, Is. 8. - Ст. 085006, DOI 10.1088/1361-6641/aace44. - Cited References: 33. - The reported study was funded by Russian Foundation for Basic Research (RFBR) according to the research project No 18-52-00009 Bel_a; No 18-32-00079 mol_a; No 18-42-240001 r_a; the state order No 3.5743.2017/6.7. . - ISSN 0268-1242. - ISSN 1361-6641

РУБ Engineering, Electrical & Electronic + Materials Science,
Рубрики:
NEUTRON-SCATTERING
   SURFACE-STATES
   MNTE
   CONDUCTIVITY
   MECHANISM
Кл.слова (ненормированные):
polycrystalline films -- magnetoresistance -- impedance -- polaron -- magnetic -- properties -- thermoelectric
Аннотация: The correlation between the dc and ac electrical resistance and the structural, magnetic, and thermoelectric properties of polycrystalline MnSe1−X Te Х (0.3 ≤ X ≤ 0.4) manganese chalcogenide films in the temperature range of 80–400 K has been investigated. Inhomogeneous electronic states and transitions between them accompanied by structural lattice deformations have been found at temperatures including the Neel temperature region. The magnetic susceptibility maximum above the Neel temperature in a magnetic field of 8.6 kOe has been observed. Temperature ranges of the coexistence of two types of electrically inhomogeneous states have been established by impedance spectroscopy in the frequency range of 0.1–1000 kHz and the change of the hopping conductivity for diffusion one accompanied by the magnetic susceptibility minimum has been found. The magnetoresistance in magnetic fields of up to 12 kОе has been established. It has been revealed that the thermopower and magnetoresistance change its sign upon heating. The experimental data are explained using a spin polaron model with the localization of polarons and formation of the electron phase-separation. The alternation of magnetoresistance in sign is attributed to the ferromagnetic orbital ordering of electrons and the negative magnetoresistance is explained by suppression of spin fluctuations in a magnetic field.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarskii Rabochi Ave 31, Krasnoyarsk 660014, Russia.
Sci Pract Mat Res Ctr NAS Belarus, P Brovki Str 19, Minsk 220072, BELARUS.

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Romanova, O. B.; Романова, Оксана Борисовна; Sitnikov, M. N.; Kretinin, V. V.; Galyas, A., I; Yanushkevich, K., I; Russian Foundation for Basic Research (RFBR) [18-52-00009 Bel_a, 18-32-00079 mol_a, 18-42-240001 r_a]; [3.5743.2017/6.7]
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10.

    Magnetooptics of nanocomposites based on iron chalcogenide nanoparticles / R. Ivantsov, D. Petrov, O. Ivanova [et al.] // Solid State Phenom. - 2020. - Vol. 312. - P. 160-165, DOI 10.4028/www.scientific.net/SSP.312.160. - Cited References: 13. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, to the research project: № 19-42-240005 «Features of the electronic structure, magnetic properties and optical excitations in nanocrystals of the multifunctional magnetic chalcogenides Fe3S4 and FeSe», by Joint Research Project of Russian Foundation for Basic Research № 19-52-52002 and Ministry of Science and Technology, Taiwan MOST № 108-2923-M-153-001-MY3 and № 106-2112-M-153-001-MY3. . - ISSN 1012-0394. - ISSN 1662-9779
   Перевод заглавия: Магнитооптика нанокомпозитов на основе наночастиц халькогенида железа
Кл.слова (ненормированные):
iron selenide -- iron sulphide -- magnetic circular dichroism -- magnetic properties -- nanoparticles
Аннотация: Morphology, structure, magnetic properties and magnetic circular dichroism (MCD) were studied for the FexSy and FexSey nanoparticles (NPs) synthesized with the polyol mediated and the thermal decomposition processes, correspondingly, at different regimes. For all NPs samples, but Fe3S4, MCD was measured for the first time. It has been shown that in the case of sulfides, the character of the MCD spectrum changes as the NPs phase composition transforms from Fe3S4 to FeS with the synthesis temperature increase. At the same time, the shape of the MCD spectrum is almost independent of the NPs phase in the case of iron selenides.

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Опубликовано в другом издании Magnetooptics of nanocomposites based on iron chalcogenide nanoparticles [Текст] / R. D. Ivantsov, D. A. Petrov, O. S. Ivanova [et al.] // The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020.- Ст.IV.03.05o.- P.105

Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia
National Pingtung University, Pingtung City, Pingtung County, 90003, Taiwan

Доп.точки доступа:
Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Zharkov, S. M.; Жарков, Сергей Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Lin, Chun-Rong; 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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