Modulated multiferroicity of Cr-doped orthorhombic polycrystalline YMnO3

被引：21

作者：

Li, S. Z. ^{[1
,2
]}

Wang, T. T. ^{[2
]}

Han, H. Q. ^{[2
]}

Wang, X. Z. ^{[3
]}

Li, H. ^{[2
]}

Liu, J. ^{[4
]}

Liu, J-M ^{[1
,5
]}

机构：

[1] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Jiangsu, Peoples R China

[2] Huangshi Inst Technol, Sch Phys, Huangshi 435003, Peoples R China

[3] Hubei Normal Univ, Dept Phys, Huangshi 435000, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[5] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 05期

关键词：

MAGNETIC-STRUCTURE;

D O I：

10.1088/0022-3727/45/5/055003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We synthesize a series of orthorhombic polycrystalline YMn(1-x)CrxO(3) (o-YMCO, x < 0.3) samples using high-pressure sintering, and investigate the multiferroicity by various characterization techniques. It is identified that Cr doping remarkably enhances the ferromagnetism, and the ferroelectric polarization is also significantly modulated. The enhanced ferromagnetism is argued to originate from the ferromagnetic interactions between neighbouring Cr3+ spins and Mn3+ spins. While the microscopic mechanism for polarization generation remains to be clarified, it may be argued, based on the response of polarization against external magnetic field, that Cr doping induces a partial transition from the symmetric exchange striction mechanism in o-YMnO3 to the asymmetric exchange striction mechanism in o-YMCO for ferroelectricity generation.

引用

页数：7

共 30 条

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