Magnetic Domain-Wall Induced Electric Polarization in NdCrO3 Polycrystalline Ceramic

Songwei Wang; Yang Bai; Xin Zhang; Liguo Fan; Huaiying Zhou

doi:10.3390/ma13081904

Magnetic Domain-Wall Induced Electric Polarization in NdCrO₃ Polycrystalline Ceramic

Materials (Basel). 2020 Apr 17;13(8):1904. doi: 10.3390/ma13081904.

Authors

Songwei Wang^{1

2}, Yang Bai¹, Xin Zhang^{1

2}, Liguo Fan¹, Huaiying Zhou^{1

2}

Affiliations

¹ School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
² Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China.

Abstract

We reported the magnetic, dielectric and magnetoelectric properties of NdCrO₃ polycrystalline ceramics. Magnetization curves revealed two magnetic transitions at 227 K and 38 K, which corresponded to Cr³⁺ canted antiferromagnetic ordering and Cr³⁺ spin reorientation phase transition, respectively. At 11.5 K, a Schottky-type anomaly was observed, caused by Nd³⁺ ground doublet Zeeman splitting. High-temperature dielectric relaxation exhibited a type of thermally activated relaxation process, which mainly resulted from the Maxwell-Wagner effect. The spin-reorientation of Cr³⁺ ions and the Nd³⁺ ground doublet splitting were observed to be accompanied by an electric polarization. The polarization could be induced by the presence of the antiferromagnetic-type domain walls, which led to spatial inversion symmetry breaking.

Keywords: NdCrO3 ceramics; magnetic property; magnetoelectric properties.

Abstract

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