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Вид документа : Статья из журнала
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Автор(ы) : 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., Temerov V. L., Bezmaternykh L. N.
Заглавие : Magnetoelectric and magnetoelastic properties of easy-plane ferroborates with a small ionic radius
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2012. - Vol. 114, Is. 5. - P.810-817. - ISSN 1063-7761, DOI 10.1134/S1063776112030053
Примечания : 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).
Предметные 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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