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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Valiev U. V., Gruber J. B., Sardar D. K., Zandi B., Kachur I. S., Mukhammadiev A. K., Piryatinskaya V. G., Sokolov V. Y., Edelman I. S.
Заглавие : Zeeman effect and stark splitting of the electronic states of the rare-earth ion in the paramagnetic terbium garnets Tb3Ga5O12 and Tb3Al5O12
Разночтения заглавия :авие SCOPUS: Zeeman effect and stark splitting of the electronic states of the rare-earth ion in the paramagnetic terbium garnets Tb3Ga 5O12 and Tb3Al5O12
Место публикации : Phys. Solid State. - 2007. - Vol. 49, Is. 1. - P.91-98. - ISSN 1063-7834, DOI 10.1134/S1063783407010167
Примечания : Cited References: 14
Предметные рубрики: YTTRIUM-ALUMINUM-GARNET
SELECTIVE POLARIZED SPECTROSCOPY
CRYSTAL-FIELD ANALYSIS
GALLIUM GARNET
Аннотация: The Zeeman effect in the F-7(6) - D-5(4) absorption band of the Tb3+ ion in the paramagnetic garnets Tb3Ga5O12 and Tb3Al5O12 was Studied. The field dependences of the Zeeman splitting of some absorption lines arc found to exhibit unusual behavior: as the magnetic field increases, the hand splitting decreases rather than increases. Symmetry analysis relates these lines to 4f - 4f electron transitions of the doublet-quasi-doublet or quasi-doublet-doublet type, for which the field dependences of the splitting differ radically from the well-known field dependences of the Zeeman splitting for quasi-doublet-quasi-doublet or quasi-doublet-singlet transitions in a longitudinal magnetic field.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Denisova L. T., Molokeev M. S., Krylov A. S., Aleksandrovsky A. S., Irtyugo L. A., Beletskii V. V., Denisov V. M.
Заглавие : Synthesis, crystal structure, luminescence, and thermophysical properties of TbGaGe2O7
Место публикации : Phys. Solid State. - 2021. - Vol. 63, Is. 1. - P.75-78. - ISSN 10637834 (ISSN), DOI 10.1134/S106378342101008X
Примечания : Cited References: 11. - We are grateful to the Krasnoyarsk Regional Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences
Аннотация: Germanate TbGaGe2O7 has been obtained from the initial Tb2O3, Ga2O3, and GeO2 oxides by the solid-phase synthesis. The germanate structure has been established by X-ray diffraction. Room-temperature luminescence spectra of the compound have been recorded. The effect of temperature on the heat capacity of the oxide compound has been investigated by differential scanning calorimetry. The thermodynamic properties of the compound have been calculated from the experimental Cp = f(T) data.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Atuchin V. V., Aleksandrovsky A. S., Chimitova O. D., Krylov A. S., Molokeev M. S., Bazarov B. G., Bazarova J. G., Xia, Zhiguo
Заглавие : Synthesis and spectroscopic properties of multiferroic β΄-Tb2(MoO4)3
Коллективы : International Workshop on Advanced Spectroscopy and Optical Materials (4th; 14–19 July 2013; Gdańsk, Poland)
Место публикации : Opt. Mater./ ed.: M. Grinberg, P. Bojarski, A. Suchocki: Elsevier Science, 2014. - Vol. 36, Is. 10. - P.1631–1635. - ISSN 0925-3467, DOI 10.1016/j.optmat.2013.12.008. - ISSN 1873-1252
Примечания : Cited References: 43. - This study was partly supported by SB RAS under Projects 28.13 and 24.31, and by the PSB RAS Project No. 3.9.5b, and RFBR Projects
Предметные рубрики: FERROELECTRIC-FERROELASTIC Tb2(MoO4)3
STIMULATED RAMAN-SCATTERING
TRANSITION-METAL MOLYBDATES
RARE-EARTH MOLYBDATES
CRYSTAL-STRUCTURE
VIBRATIONAL PROPERTIES
LUMINESCENCE PROPERTIES
Tb-2(MoO4)3 CRYSTALS
TERBIUM MOLYBDATE
PHASE-TRANSITIONS
Ключевые слова (''Своб.индексиров.''): terbium molybdate--raman spectrum--optical properties
Аннотация: Orthorhombic terbium molybdate, β΄-Tb2(MoO4)3, microcrystals have been fabricated by solid state synthesis at T = 750-1270 K for t = 290 h. The crystal structure β΄-Tb2(MoO4)3 has been refined by Rietveld method in space group Pba2 with cell parameters of a = 10.35387(6), b = 10.38413(6) and c = 10.65695(7) A (RB = 1.83%). About 40 narrow Raman lines have been observed in the Raman spectrum recorded for the β΄-Tb2(MoO4)3 powder sample. The luminescence spectrum of β΄-Tb2(MoO4)3 has been measured under the excitation at 355 nm, and the intensive photoluminescence band at 540-550 nm has been found. В© 2013 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Skorobogatov S. A., Shaykhutdinov K. A., Balaev D. A., Pavlovskii M. S., Krasikov A. A., Terentjev K. Yu.
Заглавие : Spin dynamics and exchange interaction in orthoferrite TbFeO3 with non-Kramers rare-earth ion
Место публикации : Phys. Rev. B. - 2022. - Vol. 106, Is. 18. - Ст.184404. - ISSN 24699950 (ISSN), DOI 10.1103/PhysRevB.106.184404
Примечания : Cited References: 41. - We acknowledge A. Podlesnyak for help with INS experiments and S. E. Nikitin for stimulating discussion. The reported study was funded by RFBR, Project No. 20-32-90142. This research used resources at Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory
Аннотация: The low-temperature spin dynamics of the orthorhombic TbFeO3 perovskite has been studied. It has been found that the inelastic neutron scattering (INS) spectrum of the investigated compound contains two modes corresponding to different sublattices. It is shown that the iron subsystem orders antiferromagnetically at TN=632 K and exhibits the high-energy magnon dispersion. The magnetic dynamics of this subsystem has been described within the linear spin wave theory and the in-plane and out-of-plane exchange anisotropy has been demonstrated. The approach proposed previously to describe the magnon dispersion in the TmFeO3 compound has been used. Three levels of the nondispersive crystal electric field corresponding to Tb3+ ions have been found in the energy region below 40 meV at about 17, 26, and 35 meV. The behavior of the magnetic correlation length of the terbium subsystem has been determined by studying the diffuse scattering at different temperatures. The evolution of this subsystem has been numerically described within the point charge model. It is shown that the numerical data agree satisfactorily with the experiment and with the general concept of the single-ion approximation applied to the rare-earth subsystem of orthorhombic perovskites.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Peschanskii A. V., Yeremenko A. V., Fomin V. I., Bezmaternykh L. N., Gudim, I. A.
Заглавие : Raman scattering under structural and magnetic phase transitions in terbium ferroborate
Место публикации : Low Temp. Phys.: American Institute of Physics, 2014. - Vol. 40, Is. 2. - P.171-178. - ISSN 1063-777X, DOI 10.1063/1.4865566. - ISSN 1090-6517
Примечания : Cited References: 24
Предметные рубрики: SPIN-PHONON INTERACTION
GDFE3(BO3)4
Аннотация: The Raman scattering spectrum of single crystal TbFe3(BO3)4 was studied in the frequency range 3–500 cm−1 at temperatures from 2 to 300 K. It was found that in high- and low-temperature phases there exist additional phonon lines which were not known before. In the high-temperature phase, these lines originate from LO–TO splitting of polar phonons. Appearance of the additional lines in the low temperature phase is due to both a reduction of the crystal symmetry under the phase transition and an increase of the primitive cell volume. It was established that the frequencies of some phonon lines in the magneto-ordered phase are shifted towards the high-energy region upon applying an external magnetic field along the third-order axis. The spectrum of two-magnon Raman scattering was investigated. It was shown that at low temperatures the two-magnon band has a complex shape that reflects specific features in the density of state of the magnon branches. The magnon energy at the Brillouin zone boundary was determined.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Volkov N. V., Vasiliev V. N.
Заглавие : The ''easy plane easy axis'' transition in alpha-Fe2O3:Ga crystals induced by doping with terbium ions
Место публикации : Phys. Lett. A. - 1997. - Vol. 230, Is. 1-2. - P.96-98. - ISSN 0375-9601, DOI 10.1016/S0375-9601(97)00219-3
Примечания : Cited References: 10
Аннотация: In easy plane weak ferromagnetic alpha-Fe2O3:Ga crystals it was found that doping with a hundredth part of To ions leads to the restoration of the transition into the ''easy axis'' magnetic state. It was established that in the alpha-Fe2O3:Ga, Tb crystal the angular magnetic phase is realized. (C) 1997 Published by Elsevier Science B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zvyagina G. A., Zhekov K. R., Bezmaternykh L. N., Gudim I. A., Bilych I. V., Zvyagin A. A.
Заглавие : Magnetoelastic effects in terbium ferroborate
Место публикации : Low Temp. Phys. - 2008. - Vol. 34, Is. 11. - P.901-908. - ISSN 1063-777X, DOI 10.1063/1.3009584; \b Физика низких температур
Примечания : Cited References: 17
Предметные рубрики: CRYSTAL-STRUCTURE
ND
Ключевые слова (''Своб.индексиров.''): acoustic wave velocity--antiferromagnetic materials--elastic moduli--exchange interactions (electron)--iron compounds--magnetoelastic effects--solid-state phase transformations--terbium compounds
Аннотация: The behavior of the elastic moduli and sound absorption in a terbium orthoborate single crystal at low temperatures is studied. The components of the tensor of the elastic moduli of this system are determined. A structural phase transition and a transition of the magnetic subsystem into an antiferromagnetically ordered state appear in the temperature dependences of the sound velocities and absorption. The magnetic field dependences of the velocities of transverse sound exhibit singularities in the form of jumps at a magnetic field equal to the field of the spin-flop transition of the antiferromagnetic subsystem. Theoretical analysis shows that the observed behavior of the acoustic characteristics are associated not with the rare-earth subsystem of ferroborate but rather with the renormalization of the exchange interaction between iron ions as a result of the magnetoelastic coupling.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pashchenko M. I., Bedarev V. A., Merenkov D. N., Savina Yu. O., Pashchenko V. O., Gnatchenko S. L., Bezmaternykh L. N., Temerov V. L.
Заглавие : Magneto-optical properties of terbium iron borate
Место публикации : Appl. Optics: Optical Society of America, 2014. - Vol. 53, Is. 10. - P.B116-B120. - ISSN 1559-128X, DOI 10.1364/AO.53.00B116. - ISSN 2155-3165
Примечания : Cited References: 19
Предметные рубрики: GENERATION
CRYSTALS
LASER
Аннотация: The Faraday effect induced by an external magnetic field in TbFe3(BO3)4 and TbAl3(BO3)4 borates at a wavelength 633 nm has been investigated. It was found that the terbium subsystem brings the dominant magnetic contribution to the Faraday rotation at low temperatures in borate TbFe3(BO3)4. For both TbFe3(BO3)4 and TbAl3(BO3)4 the magneto-optical coefficients of the terbium subsystem were determined.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ritter C., Balaev A. D., Vorotynov A. M., Petrakovskii G. A., Velikanov D. A., Temerov V. L., Gudim, I. A.
Заглавие : Magnetic structure, magnetic interactions and metamagnetism in terbium iron borate TbFe3(BO3)(4): a neutron diffraction and magnetization study
Разночтения заглавия :авие SCOPUS: Magnetic structure, magnetic interactions and metamagnetism in terbium iron borate TbFe3(BO3)4: Aneutron diffraction and magnetization study
Место публикации : J. Phys.: Condens. Matter: IOP PUBLISHING LTD, 2007. - Vol. 19, Is. 19. - Ст.196227. - ISSN 0953-8984, DOI 10.1088/0953-8984/19/19/196227
Примечания : Cited References: 15
Предметные рубрики: GDFE3(BO3)(4)
Ключевые слова (''Своб.индексиров.''): magnetic structure--magnetic susceptibility--metamagnetism--neutron diffraction--neutron scattering--phase transitions--aneutron diffraction--magnetic interactions--neutron scattering measurements--terbium iron borate--terbium compounds
Аннотация: Magnetization, susceptibility and neutron scattering measurements were performed on the terbium iron borate TbFe3(BO3)(4). Structural and magnetic phase transitions were obtained as a function of external magnetic field and temperature. A metamagnetic transition of the terbium spins and a spin-flop transition of the iron sublattice are obtained at an external magnetic field 35 kOe Ht 60 kOe. The values of the effective exchange HE and the anisotropy HA fields are evaluated. Temperature dependent neutron diffraction studies reveal the magnetic structure of TbFe3(BO3)(4) and the thermal evolution of the two magnetic sublattices. An antiferromagnetic coupling along the helicoidal chains of Fe atoms sets in at 40 K with a propagation vector k
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Vorotynov A. M., Ritter C., Petrakovskii G. A., Balaev A. D., Temerov V. L., Gudim I. A.
Заглавие : Magnetic structure and magnetic interactions in terbium iron borate TbFe3(BO3)4
Коллективы : "New Layered 3d-Materials for Spintronics", Workshop INTAS - Siberian Branch of the Russian Academy of Sciences Scientific Cooperation on the Research Project
Место публикации : Workshop INTAS - Sib. Branch of the RAS Sci. Cooperation on the Res. Project “New Layered 3d-Materials for Spintronics”/ chairman G. A. Petrakovskii. - 2007. - P.13
Аннотация: INTAS (The International Association for the Promotion of Cooperation with Scientists from the New Independent States of the Former Soviet Union) — международная ассоциация по содействию сотрудничеству с учёными новых независимых государств бывшего Советского Союза. Некоммерческая организация, финансировалась главным образом из бюджета Европейского Союза. Являлась крупнейшим фондом, поддерживающим научное сотрудничество между учёными стран бывшего СССР и Европейского Союза с 1993 г. Программы INTAS охватывали широкий круг научно-исследовательских проблем. 22 сентября 2006 года было принято решение о прекращении осуществления программы на основании рекомендации Европейской Комиссии. С 1 апреля 2007 года прекратилось распределение новых грантов.
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