Spin frustration destruction and ferroelectricity modulation in Ca 3CoMnO6: Effects of Mn deficiency

被引：0
|
作者：
Lin, L. [1 ]
Guo, Y.J. [1 ,2 ]
Xie, Y.L. [1 ]
Dong, S. [3 ]
Yan, Z.B. [1 ]
Liu, J.-M. [1 ,4 ]
机构：
[1] Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
[2] Department of Physics, Jiangsu Institute of Education, Nanjing 210013, China
[3] Department of Physics, Southeast University, Nanjing 211189, China
[4] International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China
来源：
Journal of Applied Physics | 2012年 / 111卷 / 07期
关键词：
543.2 Manganese and Alloys - 701.1 Electricity: Basic Concepts and Phenomena;
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摘要：
We present careful experiments on the spin order and multiferroicity of Mn-deficient Ca3CoMn1-xO6 with respect to the CoMn compensated Ca3Co1+yMn1-yO6. It is revealed that a slight destruction of the CoMn ionic order does not damage but significantly enhances the ferroelectricity in terms of the transition point and polarization magnitude, due to the Mn-deficiency enhanced degree of CoMn spin ordering in comparison with Ca3Co1yMn 1-yO6. The delicate competition between the ionic (charge) order and spin frustration is the core physics for improving the ferroelectric performance. © 2012 American Institute of Physics.
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