Exchange coupling driven omnidirectional rotatable anisotropy in ferrite doped CoFe thin film

被引：69

作者：

Chai, Guozhi ^{[1
]}

Phuoc, Nguyen N. ^{[1
]}

Ong, C. K. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Phys, Ctr Superconducting & Magnet Mat, Singapore 117542, Singapore

来源：

SCIENTIFIC REPORTS | 2012年 / 2卷

关键词：

SOFT-MAGNETIC PROPERTIES; DYNAMIC ANISOTROPY; PERMEABILITY; BIAS; MICROSTRUCTURE; COERCIVITY;

D O I：

10.1038/srep00832

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Isotropic magnetic materials with high resonant frequencies are useful for applications in microwave devices. Undoped CoFe thin films, as common soft magnetic materials with high saturation magnetization, show isotropic characteristics but no high frequency response. Here, we use ferrite doped CoFe thin film to realize a resonant frequency higher than 4.5 GHz at all orientations. The exchange coupling between ferrimagnet and ferromagnet is assumed to play a key role on the omnidirectional rotatable anisotropy.

引用

页数：5

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