Influence of the ground state of the Pr3+ ion on magnetic and magnetoelectric properties of the PrFe3(BO3)4 multiferroic |
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Authors: | A. M. Kadomtseva Yu. F. Popov G. P. Vorob’ev A. A. Mukhin V. Yu. Ivanov A. M. Kuz’menko L. N. Bezmaternykh |
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Affiliation: | (1) Moscow State University, Moscow, 119992, Russia;(2) Prokhorov Institute of General Physics, Russian Academy of Sciences, Moscow, 119991, Russia;(3) Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660038, Russia |
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Abstract: | The magnetic, magnetoelectric, and magnetoelastic properties of a PrFe3(BO3)4 single crystal and the phase transitions induced in this crystal by the magnetic field are studied both experimentally and theoretically. Unlike the previously investigated ferroborates, this material is characterized by a singlet ground state of the rare-earth ion. It is found that, below T N = 32 K, the magnetic structure of the crystal in the absence of the magnetic field is uniaxial (l ∥ c), while, in a strong magnetic field H ∥ c (H cr ~ 43 kOe at T = 4.2 K), a Fe3+ spin reorientation to the basal plane takes place. The reorientation is accompanied by anomalies in magnetization, magnetostriction, and electric polarization. The threshold field values determined in the temperature interval 2–32 K are used to plot an H-T phase diagram. The contribution of the Pr3+ ion ground state to the parameters under study is revealed, and the influence of the praseodymium ion on the magnetic and magnetoelectric properties of praseodymium ferroborate is analyzed. |
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