The effect of boron addition on the atomic structure and microwave magnetic properties of FeGaB thin films

被引：9

作者：

Gao, Jinsheng ^{[1
]}

Yang, Aria ^{[1
]}

Chen, Yajie ^{[1
]}

Kirkland, J. P. ^{[2
]}

Lou, Jing ^{[1
]}

Sun, Nian X. ^{[1
]}

Vittoria, Carmine ^{[1
]}

Harris, Vincent G. ^{[1
]}

机构：

[1] Northeastern Univ, Dept Elect & Comp Engn, Ctr Microwave Magnet Mat & Integrated Circuits, Boston, MA 02115 USA

[2] SFA Inc, Landover, MD 20785 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 07期

基金：

美国国家科学基金会;

关键词：

FE-GA; MAGNETOSTRICTIVE PROPERTIES; ALLOYS;

D O I：

10.1063/1.3072027

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Varying amounts of boron were added to the host FeGa alloy to investigate its impact upon local atomic structure and magnetic and microwave properties. The impact of B upon the local atomic structure in FeGaB films was investigated by extended x-ray absorption fine structure (EXAFS) analysis. The EXAFS fitting results revealed a contraction of lattice parameters with the introduction of B. The Debye-Waller factor determined from EXAFS fitting increases as a function of boron addition and abruptly changes during the structural evolution from crystalline to amorphous that occurs near 9% B. Upon the onset of this transition the static and microwave magnetic properties became exceptionally soft, with values of coercivity and ferromagnetic linewidth reducing to less than 1 Oe and 25 Oe, respectively. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3072027]

引用

页数：3

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