Issue 46, 2019

Spin–orbit coupling in magnetoelectric Ba3(Zn1−xCox)2Fe24O41 hexaferrites

Abstract

The Z-type hexaferrites Ba3(Zn1−xCox)2Fe24O41 (x = 0.2, 0.4, 0.6, 0.8, defined as Z1–Z4) were synthesized by a sol–gel method. With increasing cobalt concentration, the origin of magnetoelectric (ME) coupling and the effects of crystal parameters, occupation of ions, and magnetocrystalline anisotropy (MCA) on ME current were studied systematically. The mechanism of magnetic phase transition, revealing the evolution of the magnetic order in the temperature range of 10–400 K, was discussed in detail. Our results suggest that the ferroelectricity of Z1–Z4 originates from both inverse Dzyaloshinskii Moriya (DM) interaction and p–d hybridization mechanism. In particular the ME coupling property is only dominated by p–d hybridization with spin–orbit coupling. This study provides an effective way to improve the ME coupling property of hexaferrites, which have potential applications in the design of new electronic devices.

Graphical abstract: Spin–orbit coupling in magnetoelectric Ba3(Zn1−xCox)2Fe24O41 hexaferrites

Supplementary files

Article information

Article type
Paper
Submitted
29 Aug 2019
Accepted
29 Oct 2019
First published
31 Oct 2019

Phys. Chem. Chem. Phys., 2019,21, 25826-25837

Spin–orbit coupling in magnetoelectric Ba3(Zn1−xCox)2Fe24O41 hexaferrites

C. Xu, A. Zhang, Z. Feng, W. Lu, B. Kang, J. Zhang, J. Ge and S. Cao, Phys. Chem. Chem. Phys., 2019, 21, 25826 DOI: 10.1039/C9CP04783B

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