Magnetic manipulation of electric orders in Co4NbTaO9

Y. Y. Liu; Y. P. Lu; L. Zhang; Y. Fang; Z. D. Han; B. Qian; X. F. Jiang; L. Y. Zhu; D. H. Wang; Y. W. Du

doi:10.1039/C6RA19594F

Magnetic manipulation of electric orders in Co₄NbTaO₉

Y. Y. Liu,^a Y. P. Lu,^a L. Zhang,^a Y. Fang,*^a Z. D. Han,^a B. Qian,*^a X. F. Jiang,^a L. Y. Zhu,^b D. H. Wang^c and Y. W. Du^c

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^a Jiangsu Laboratory of Advanced Functional Materials, Department of Physics, Changshu Institute of Technology, Changshu 215500, China
E-mail: fangyong@cslg.cn, njqb@cslg.cn

^b School of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China

^c National Laboratory of Solid State Microstructures and Key Laboratory of Nanomaterials for Jiang Su Province, Nanjing University, Nanjing 210093, People's Republic of China

Abstract

Magnetic, dielectric and magnetoelectric properties of the polycrystalline Co₄NbTaO₉ have been investigated in this paper. The antiferromagnetic phase transition of this compound is identified at the temperature of 23.6 K. Anomalies in the temperature-dependent dielectric constants and pyroelectric currents emerge around its magnetic transition point under magnetic field, and increase with the increasing external magnetic field. Antiferromagnetic fluctuation and domain effect are considered to be response for the phenomenon observed in this compound.

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Magnetic manipulation of electric orders in Co₄NbTaO₉

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Magnetic manipulation of electric orders in Co₄NbTaO₉

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