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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrovsky A. S., Krylov A. S., Potseluyko A. M., Seredkin V. A., Zaitsev A. I., Zamkov A. V.
Заглавие : Pulsed laser deposition of europium borate glass films and their optical and magneto-optical properties
Коллективы : International Conference on Lasers, Applications, and Technologies
Место публикации : Laser-Assisted Micro- and Nanotechnologies. Proceedings of SPIE: [11-15 May 2005]/ ed. V. I. Konov [et al.]: SPIE-Int. Soc. Optical Engineering, 2006. - P.61610A
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Atuchin V. V., Bazarov B. G., Grossman V. G., Molokeev M. S., Bazarova Zh.G.
Заглавие : Structural field of K2Al2B2O7-family [borate] crystals
Коллективы : Nonlinear Optics and Applications (7; 2013 ; Apr. ; 15; Prague)
Место публикации : Proc. SPIE. - 2013. - Vol. 8772. - Ст.877210. - P. - DOI 10.1117/12.2017099
Аннотация: The known crystal structures of borate compounds with general composition AI2MIII 2B2O7 (AI: Na, K, Cs, Rb) have been considered. The structures in space groups P63/m, P-31c, P321 and P21/c have been found depending on cation combination. Criterion k = (r(MIII)+r(B)+2r(O))/r(AI) has been formulated and it controls the formation of trigonal K2Al2B2O7 (KABO) type structure. The existence of noncentrosymmetric KABO-type borates is possible over the range of k = 2.7 – 2.06. This range is promising for searching new borate crystals and solid solutions with pronounced nonlinear optical properties. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Atuchin V. V., Bazarov B. G., Grossman V. G., Molokeev M. S., Bazarova Zh.G.
Заглавие : Structural limits of K2Al2B2O7-family borate crystals
Коллективы : Институт нанотехнологий микроэлектроники РАН, Ульяновский государственный университет, Российский фонд фундаментальных исследований, Академия наук Татарстана, "Opto-, nanoelectronics, nanotechnology, and microsystems", International Conference (2013 ; Jul. ; 26-30; Ulyanovsk, Russia), "Опто-, наноэлектроника, нанотехнологии и микросистемы", международная конференция (2013 ; июль.; 26-30; Ульяновск)
Место публикации : XVI Международная конференция "Опто-, наноэлектроника, нанотехнологии и микросистемы": Труды. - Ульяновск, 2013. - P.102-103
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boldyrev K. N., Stanislavchuk T. N., Klimin S. A., Popova M. N., Bezmaternykh L. N.
Заглавие : Terahertz spectroscopy of multiferroic EuFe3(BO3)4
Место публикации : Phys. Lett. A: Elsevier Science BV, 2012. - Vol. 376, Is. 37. - P.2562-2564. - ISSN 0375-9601, DOI 10.1016/j.physleta.2012.06.028
Примечания : Cited References: 19. - This work was partially supported by the Russian Foundation for Basic Research under Grants No. 10-02-01071-a and No. 09-02-00171-a, by the Ministry of Education and Science under Grant HIII-4828.2012.2, and by the Russian Academy of Sciences under the programs for basic research.
Предметные рубрики: SINGLE-CRYSTAL
GDFE3(BO3)4
Ключевые слова (''Своб.индексиров.''): terahertz spectroscopy--multiferroics--europium iron borate
Аннотация: The terahertz spectra of a rare-earth iron borate with the huntite structure are obtained for the first time. We study the low-temperature (4.0–90 K) α-polarized transmittance spectra of the EuFe3(BO3)4 single crystal in the region 0.9–6.0 THz. Pronounced shifts of phonon frequencies and appearance of new phonon modes at the temperature T S = 58 K of the R 32 → P 3 1 21 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature T N = 34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin–phonon coupling in this multiferroic material.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boldyrev K. N., Popova M. N., Bettinelli M., Temerov V. L., Gudim, Irina A., Bezmaternykh L. N., Loiseau P., Aka G., Leonyuk N. I.
Заглавие : Quality of the rare earth aluminum borate crystals for laser applications, probed by high-resolution spectroscopy of the Yb3+ ion
Место публикации : Opt. Mater.: Elsevier Science BV, 2012. - Vol. 34, Is. 11. - P.1885-1889. - ISSN 0925-3467, DOI 10.1016/j.optmat.2012.05.021
Примечания : Cited References: 20. - This work was supported by the Russian Academy of Sciences under the Programs for Basic Research, the Russian Foundation for Basic research under Grants No 10-02-01071-a and No 09-02-00171-a, and by the Ministry of Education and Science under Grant HIII-4828.2012.2.
Предметные рубрики: GROWTH
Y1-XYBXAL3(BO3)4
LUMINESCENCE
FREQUENCY
CENTERS
Ключевые слова (''Своб.индексиров.''): ytterbium--aluminum borates--impurities--high-resolution spectroscopy--uv edge
Аннотация: A comparative study was performed of the low-temperature high-resolution absorption spectra of the Yb3+ probe in R1−xYbxAl3(BO3)4 (R = Y, Tm, Lu) crystals grown by flux technique independently in four different laboratories using different solvents. We show that the incorporation of solvent components into the crystal in the course of crystallization gives rise to spectral satellites of the Yb3+ 0(2F7/2) → 0′(2F5/2) absorption lines and assign particular satellites to the Yb3+ centers near the bismuth and molybdenum impurities (which decrease the transparency of YAB in the UV spectral range). We suggest this spectroscopic method for a rapid analysis of the quality of UV laser crystals and for improvement of growth technologies.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Cherepakhin A. V., Zaitsev A. I., Aleksandrovsky A. S., Zamkov A. V.
Заглавие : Optical and nonlinear optical properties of orthorhombic BiB3O6
Место публикации : Opt. Mater.: Elsevier Science BV, 2012. - Vol. 34, Is. 5. - P.790-792. - ISSN 0925-3467, DOI 10.1016/j.optmat.2011.11.004
Примечания : Cited References: 13. - The work was supported by Ministry of Education and Science of Russian Federation (Contract 16.740.11.0150), Grant of President of Russian Federation for support of leading scientific schools No. SS-4645.2010.2, Grant No. RNP.2.1.1.3455, Project 3.9.1 of PSB RAS, and Projects No. 27.1 and No. 5 of SB RAS.
Предметные рубрики: BISMUTH BORATE BIB3O6
CRYSTAL
LASER
GENERATION
GROWTH
BIBO
Ключевые слова (''Своб.индексиров.''): orthorhombic bismuth triborate delta-bibo--refractive indices--nonlinear optical coefficients--nonlinear optical materials--phase matching
Аннотация: Dispersion of refraction coefficients of orthorhombic BiB3O6 in the wavelength range between 435.8 and 1060 nm is studied, nonlinear optical coefficients are determined, and phase matching angles, angular and spectral bandwidths for second harmonic generation processes are calculated. delta-BiBO may be suitable for doubling of lasers with a wavelength in the 1.3 mu m region as well as the matrix for self-doubling lasing media. (C) 2011 Elsevier B.V. All rights reserved.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ivanova O. S., Edelman I. S., Ivantsov R. D., Petrakovskaya E. A., Великанов, Дмитрий Анатольевич, Trofimova N. N., Zubavichus Y. V.
Заглавие : Ensembles OF[[d]]γ[[/d]]-Fe[[d]]2[[/d]]O[[d]]3[[/d]] nanoparticles formed during devitrification of borate glasses
Коллективы : Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism
Место публикации : V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism: abstracts. - Vladivostok: FEFU, 2013. - С. 138. - ISBN 978-5-7444-3124-2
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Денисова Л. Т., Денисов, Виктор Михайлович, Саблина, Клара Александровна, Чумилина, Любовь Геннадьевна, Патрин, Геннадий Семёнович, Иртюго, Лилия Александровна
Заглавие : Высокотемпературная теплоёмкость бората меди
Место публикации : Журн. СФУ. Сер. "Химия". - 2013. - Т. 6, №. 1. - С. 60-64; J. Sib. Fed. Univ. Chem.
Ключевые слова (''Своб.индексиров.''): heat capacity--thermodynamic properties--copper-borate
Аннотация: This paper reports experimental data obtained on the heat capacity of copper borate within the 380 – 1020 К temperature range. The thermodynamic functions have been calculated using this data.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Edelman I. S., Ivanova O. S., Ivantsov R. D., Velikanov D. A., Petrakovskaja E. A., Artemenko A., Curely J., Kliava J., Zaikovskiy V. I., Stepanov S.
Заглавие : Magnetic properties and morphology of manganese ferrite nanoparticles in glasses
Коллективы : Baltic Conference on Silicate Materials
Место публикации : IOP Conf. Ser.: Mater. Sci. Eng. - 2011. - Vol. 25, Is. 1. - Ст.012017. - , DOI 10.1088/1757-899X/25/1/012017
Ключевые слова (''Своб.индексиров.''): average diameter--borate glass--co-doped--electron magnetic resonance--magnetic and magneto-optical properties--magnetic behaviour--magnetic circular dichroisms--magnetic nanoparticles--magnetically ordered material--manganese ferrite nanoparticles--manganese ferrites--morphological characteristic--paramagnetic ions--resonance field--size and shape--static magnetization--temperature dependence--temperature dependent--variable temperature--visible and near infrared--alumina--dichroism--ferrite--glass--iron oxides--magnetic properties--magnetic resonance--magnetocrystalline anisotropy--manganese--manganese oxide--nanoparticles--paramagnetism--silicates--spectroscopy--nanomagnetics
Аннотация: Static magnetization (SM), magnetic circular dichroism (MCD) and electron magnetic resonance (EMR) studies are reported of borate glasses 22.5 K 2O-22.5 Al 2O 3-55 B 2O 3 co-doped with iron and manganese oxides. In as-prepared glasses the paramagnetic ions usually are in diluted state; however, if the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles are found already in as-prepared glass. After additional thermal treatment all glasses show magnetic behaviour, MCD and EMR due to the presence of magnetic nanoparticles with characteristics close to those of manganese ferrite. By computer simulating the EMR spectra at variable temperatures, their morphological characteristics are deduced: relatively broad size and shape distribution with average diameter of ca. 3-4 nm. The characteristic temperature-dependent shift of the apparent resonance field is explained by a strong temperature dependence of the magnetocrystalline anisotropy in the nanoparticles. The potassium-alumina-borate glasses containing magnetic nanoparticles represent a novel class of materials: "transparent magnets". Indeed, they remain transparent in a part of visible and near infrared spectral range while showing magnetic and magneto-optical properties characteristic of magnetically ordered materials.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kuzmenko A. M., Mukhin A. A., Ivanov V.Yu., Bezmaternykh L. N.
Заглавие : Coupled R and Fe magnetic excitations in RFe 3(BO 3) 4 multiferroics
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P.269-272. - ISBN 9783037854365, DOI 10.4028/www.scientific.net/SSP.190.269
Ключевые слова (''Своб.индексиров.''): magnetic resonance--rare-earth iron borates--terahertz spectroscopy--antiferromagnetics--coupled mode--exchange coupled--frequency ranges--g factors--iron borate--magnetic excitations--multiferroics--resonance mode--strong interaction--transmission spectrums--antiferromagnetism--electron transitions--gadolinium--ions--magnetic materials--magnetic permeability--magnetic resonance--terahertz spectroscopy--neodymium
Аннотация: Various resonance modes were observed in the transmission spectra of rare-earth iron borates RFe 3(BO 3) 4 (R = Nd 3+, Sm 3+, Gd 3+) at the frequency range 100-600 GHz, which were attributed to collective magnetic excitations in the exchange coupled Fe- and R-subsystems, i.e. antiferromagnetic (Fe) resonance and electron transitions in the R-ions. Strong interaction of the Fe and R oscillations was revealed and theoretically analyzed taking into account feature of the R-ion ground state. Intensities of the coupled modes (contributions to magnetic permeability) strongly depend on a difference of Fe and R ions g-factors that allows defining the sign of the latter. In particular, an appreciable intensity of exchange (Nd) modes in NdFe 3(BO 3) 4 is caused by g Nd?,|| < 0 whereas in GdFe 3(BO 3) 4 with gGd ? gFe ? 2 the exchange (Gd) modes were hided due to compensation of Fe and Gd contributions. In SmFe 3(BO 3) 4, despite a negligible Sm g-factor, the Sm modes were clear observed due to their excitation via coupling with the Fe-subsystem. В© (2012) Trans Tech Publications.
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