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Demidov, A. A.
Magnetic properties of Nd0.9Dy0.1Fe3(BO3)4 / A. A. Demidov, I. A. Gudim, E. V. Eremin // Physica B. - 2012. - Vol. 407, Is. 3. - P. 393-397, DOI 10.1016/j.physb.2011.11.004. - Cited References: 18. - This study was supported, in part, by Russian Federation's President Grant MK-497.2010.2 (A.A.D.). . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
NDFE3(BO3)4
HOFE3(BO3)4
MULTIFERROICS
Кл.слова (ненормированные):
Phase transitions -- Rare-earth ferroborates RFe3(BO3) 4 -- Multiferroics
Аннотация: The magnetic properties of trigonal Nd0.9Dy0.1Fe3(BO3)4 substituted compound with the competitive Nd–Fe and Dy–Fe exchange interactions have been investigated. It has been shown that in Nd0.9Dy0.1Fe3(BO3)4 a spontaneous spin-reorientation transition from an ease-axis state to an easy-plane occurs near 8 K. Anomalies of the magnetization curves are observed in a spin-flop transition induced by the magnetic field B II c. The calculations were performed using a molecular-field approximation and a crystal-field model for the rare-earth subsystem. Extensive experimental data on the magnetic properties of Nd0.9Dy0.1Fe3(BO3)4 have been interpreted and good agreement between theory and experiment has been achieved using the obtained theoretical dependences.

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Держатели документа:
[Demidov, A. A.] Bryansk State Tech Univ, Bryansk 241035, Russia
[Gudim, I. A.
Eremin, E. V.] Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович
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Magnetoelectric and magnetoelastic properties of easy-plane ferroborates with a small ionic radius / A. M. Kadomtseva [et al.] // J. Exp. Theor. Phys. - 2012. - Vol. 114, Is. 5. - P. 810-817, DOI 10.1134/S1063776112030053. - Cited References: 26. - This work was supported by the Russian Foundation for Basic Research (project nos. 10-02-00846a, 09-02-01355, and 12-02-01261). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
EARTH
   HoFe3(BO3)4
   DyFe3(BO3)4
   RFe3(BO3)4
Аннотация: The magnetic, magnetoelectric, and magnetoelastic properties of RFe3(BO3)4 ferroborates are studied. The measurement of the field dependences of the magnetoelectric polarization along the a axis in holmium ferroborate and in the mixed composition Ho0.5Sm0.5Fe3(BO3)4 revealed the following dependences for easy-plane ferroborates: (a) the longitudinal and transverse magnetoelectric effects have the opposite signs and (b) magnetically induced polarization changes its sign in a field close to the field of exchange between rare-earth and iron ions. These dependences agree well with theoretical predictions based on the symmetry of the compounds. The relatively low f-d exchange field in holmium ferroborate (about 20 kOe), which magnetizes the rare-earth subsystem, causes smaller polarization jumps (about 30 μC/m2) in fields lower than 10 kOe as compared to the jumps in other easy-plane ferroborates (R = Sm, Nd). The increase in the electric polarization induced in HoFe3(BO3)4 in magnetic fields higher than 100 kOe (200–300 μC/m2) is found to be significantly smaller than in neodymium ferroborate, which indicates a substantial dependence of the magnetoelectric effects on the electronic structure of a rare-earth ion.

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Публикация на русском языке Магнитоэлектрические и магнитоупругие свойства легкоплоскостных ферроборатов с малым ионным радиусом [Текст] / А. М. Кадомцева [и др.] // Ж. эксперим. и теор. физ. : Наука, 2012. - Т. 141 Вып. 5. - С. 930-938

Держатели документа:
[Kadomtseva, A. M.
Vorob'ev, G. P.
Popov, Yu F.
Pyatakov, A. P.] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[Pyatakov, A. P.
Mukhin, A. A.
Ivanov, V. Yu
Zvezdin, A. K.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Gudim, I. A.
Temerov, V. L.
Bezmaternykh, L. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kadomtseva, A. M.; Vorob'ev, G. P.; Popov, Y. F.; Pyatakov, A. P.; Mukhin, A. A.; Ivanov, V. Y.; Zvezdin, A. K.; Gudim, Irina A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
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    Probing magnetostructural correlations in multiferroic HoAl3(BO3)4 / H. Zhang [et al.] // Phys. Rev. B. - 2015. - Vol. 92, Is. 10. - Ст. 104108, DOI 10.1103/PhysRevB.92.104108. - Cited References:97. - This work is supported by the U.S.Department of Energy Grant No. DE-FG02-07ER46402. Synchrotron powder x-ray diffraction and x-ray absorption data acquisition were performed at Brookhaven National Laboratory's National Synchrotron Light Source (NSLS). Use of the NSLS was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. The Physical Properties Measurement System used in the heat capacity measurements was acquired under National Science Foundation Major Research Instrumentation Grant No. DMR-0923032 (American Recovery and Reinvestment Act award). This research used resources of the National Energy Research Scientific Computing Center, a U.S. Department of Energy Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. . - ISSN 1098. - ISSN 1550-235X
   Перевод заглавия: Исследование магнитоструктурной корреляции в мультиферроике HoAl3(BO3)4

РУБ Physics, Condensed Matter
Рубрики:
PAIR DISTRIBUTION FUNCTION
   TOTAL-ENERGY CALCULATIONS
   WAVE BASIS-SET
   FERROELECTRIC POLARIZATION
   DEBYE TEMPERATURES
   SINGLE-CRYSTALS
   HOFE3(BO3)4
   GDFE3(BO3)4
   DIFFRACTION
   FEATURES
Аннотация: The system HoAl3(BO3)(4) has recently been found to exhibit a large magnetoelectric effect. To understand the mechanism, macroscopic and atomic level properties of HoAl3(BO3)(4) were explored by temperature and magnetic field dependent heat capacity measurements, pressure and temperature dependent x-ray diffraction measurements, as well as temperature and magnetic field dependent x-ray absorption fine structure measurements. The experimental work was complemented by density functional theory calculations. An anomalous change in the structure is found in the temperature range where large magnetoelectric effects occur. No significant structural change or distortion of the HoO6 polyhedra is seen to occur with magnetic field. However, the magnetic field dependent structural measurements reveal enhanced correlation between neighboring HoO6 polyhedra. This observed response is seen to saturate near 3 T. A qualitative atomic level description of the mechanism behind the large electric polarization induced by magnetic fields in the general class of RAl3(BO3)(4) systems (R = rare earth) is developed.

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Держатели документа:
New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA.
SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11794 USA.
Brookhaven Natl Lab, Photon Sci Div, Upton, NY 11973 USA.
RAS, Siberian Branch, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zhang, H.; Yu, T.; Chen, Z.; Nelson, C. S.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Abeykoon, A. M. M.; Tyson, T. A.
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Infrared absorption spectra of a Nd0.5Ho0.5Fe3(BO3)4 crystal / Y. V. Gerasimova [et al.] // Phys. Solid State. - 2016. - Vol. 58, Is. 1. - P. 155-159, DOI 10.1134/S106378341601011X. - Cited References: 15. - This study was supported in part by the Russian Foundation for Basic Research (project no. 12-02-00825). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
HoFe3(BO3)4
Аннотация: Infrared absorption spectra of a Nd0.5Ho0.5Fe3(BO3)4 crystal in the spectral range of 30–1700 cm–1 have been measured at temperatures from 6 to 300 K. The experimental spectra have been analyzed based on the semiempirical calculation of the lattice dynamics and the analysis of correlation diagrams of borate complexes. No changes associated with structural phase transitions have been detected in the temperature range of measurements; the effect of magnetic ordering on the infrared absorption spectra has not been observed.

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Публикация на русском языке Спектры инфракрасного поглощения кристалла Nd0.5Ho0.5Fe3(BO3)4 [Текст] / Ю. В. Герасимова [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2016. - Т. 58 Вып. 1. - С. 149-153

Доп.точки доступа:
Gerasimova, Y. V.; Герасимова, Юлия Валентиновна; Sofronova, S. N.; Софронова, Светлана Николаевна; Gudim, I. A.; Гудим, Ирина Анатольевна; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич
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Electronic band structures of NdFe3(BO3)4 and NdGa3(BO3)4 crystals: ab initio calculations / S. Krylova, I. Gudim, A. Aleksandrovsky [et al.] // Ferroelectrics. - 2021. - Vol. 575, Is. 1. - P. 11-17, DOI 10.1080/00150193.2021.1888219. - Cited References: 27. - This work was supported by the Russian Foundation for Basic Research Grant No. 20-42-240009 . - ISSN 0015-0193. - ISSN 1563-5112

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
HOFE3(BO3)4
   TEMPERATURE
   SPECTRA
   GROWTH
Кл.слова (ненормированные):
Borates -- ab initio calculation -- electronic bands -- crystal structure
Аннотация: NdFe3(BO3)4 and NdGa3(BO3)4 crystals are of great interest due to their physical properties. For example, NdFe3(BO3)4 crystal demonstrates magnetodielectric and magnetopiezoelectric effects, and NdGa3(BO3)4 crystal possesses luminescent and nonlinear optical properties. In this work, the properties of these materials are calculated by the plane-wave pseudo-potential method based on density functional theory. The structures of the crystals are optimized. The electronic structure of NdFe3(BO3)4 and NdGa3(BO3)4 are calculated.

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Держатели документа:
Kirensky Inst Phys FRC KSC SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Krylova, S. N.; Крылова, Светлана Николаевна; Gudim, I. A.; Гудим, Ирина Анатольевна; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич; Russian Foundation for Basic Research GrantRussian Foundation for Basic Research (RFBR) [20-42-240009]
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