Magnetoelectric and magnetoelastic properties of easy-plane ferroborates with a small ionic radius
- Russian Academy of Sciences, Institute of General Physics (Russian Federation)
- Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)
The magnetic, magnetoelectric, and magnetoelastic properties of RFe{sub 3}(BO{sub 3}){sub 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 Ho{sub 0.5}Sm{sub 0.5}Fe{sub 3}(BO{sub 3}){sub 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 {mu}C/m{sup 2}) 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 HoFe{sub 3}(BO{sub 3}){sub 4} in magnetic fields higher than 100 kOe (200-300 {mu}C/m{sup 2}) 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.
- OSTI ID:
- 22027868
- Journal Information:
- Journal of Experimental and Theoretical Physics, Vol. 114, Issue 5; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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