1. Anisotropic spin-driven ferroelectricity and magnetoelectric effect in a Y-type hexaferrite
- Author
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M. F. Liu, Deyang Chen, X. S. Gao, Zhipeng Hou, Zhen Fan, Leiyu Li, J.-M. Liu, Peilian Li, Xubing Lu, Minghui Qin, W. Wang, J. B. Xian, and Min Zeng
- Subjects
010302 applied physics ,Materials science ,Physics and Astronomy (miscellaneous) ,Condensed matter physics ,Magnetoelectric effect ,02 engineering and technology ,Dielectric ,021001 nanoscience & nanotechnology ,01 natural sciences ,Ferroelectricity ,Magnetic field ,Magnetization ,0103 physical sciences ,0210 nano-technology ,Anisotropy ,Single crystal ,Spin-½ - Abstract
We report a systematic study on the magnetic, dielectric, and magnetoelectric (ME) properties of the Y-type hexaferrite (Ba0.4Sr1.6)Zn2(Fe11.3Al0.7)O22 single crystal. The phase diagrams were established by the observed magnetic anomalies under magnetic field and temperature scans for the in-plane and out-of-plane cases. Intrinsic large anisotropy in the magnetodielectric and converse ME effects was revealed. The spin-driven electric polarizations induced in the ab-plane and out-of-plane were found to be closely related to the transverse conical and alternating longitudinal conical spin structures, respectively. The amplitudes of varied magnetization ΔM are about ∼0.128 μB/f.u and ∼0.0178 μB/f.u. in the E oscillating between ±1 MV/m at 100 K, corresponding to the converse ME effect coefficient of ∼3500 ps/m and ∼480 ps/m for the in-plane and out-of-plane cases, respectively. All these results demonstrate the essential and unique spin-order-induced anisotropic ferroelectricity and ME properties in these Y-type hexaferrites.
- Published
- 2021
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