Abstract
The dependences of the antiferromagnetic resonance frequencies on the constant magnetic field H and constant electric field E are calculated for a KNiPO4 crystal with spontaneous electric polarization and antiferromagnetic order. It is demonstrated that the KNiPO4 crystal is characterized by an exchange-enhanced effect of the electric field E on the antiferromagnetic resonance frequencies. This effect is not revealed in the magnetoelectric materials studied earlier. It is established that oscillations of both magnetization and electric polarization exhibit resonance response at antiferromagnetic resonance frequencies. The expressions for these responses in alternating magnetic and electric fields are presented.
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Translated from Fizika Tverdogo Tela, Vol. 44, No. 7, 2002, pp. 1272–1276.
Original Russian Text Copyright © 2002 by Leskovets, Kurkin, Nikolaev, Turov.
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Leskovets, V.V., Kurkin, M.I., Nikolaev, V.V. et al. High-frequency properties of KNiPO4 in alternating magnetic and electric fields. Phys. Solid State 44, 1330–1335 (2002). https://doi.org/10.1134/1.1494631
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DOI: https://doi.org/10.1134/1.1494631