Electromigration induced fast L10 ordering phase transition in perpendicular FePt films

被引：10

作者：

Feng, Chun ^{[1
]}

Li, Xujing ^{[1
]}

Yang, Meiyin ^{[1
]}

Gong, Kui ^{[1
]}

Zhu, Yuanmin ^{[1
]}

Zhan, Qian ^{[1
]}

Sun, Li ^{[2
,3
]}

Li, Baohe ^{[4
]}

Jiang, Yong ^{[1
]}

Yu, Guanghua ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China

[2] Univ Houston, Dept Mech Engn, Houston, TX 77204 USA

[3] Univ Houston, Texas Ctr Superconduct TcSUH, Houston, TX 77204 USA

[4] Beijing Technol & Business Univ, Sch Sci, Dept Phys, Beijing 100048, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 02期

基金：

美国国家科学基金会; 北京市自然科学基金;

关键词：

NANOPARTICLES;

D O I：

10.1063/1.4775692

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Realizing fast L1(0) ordering phase transition ( LOPT) in L1(0) structured magnetic materials without heat treatment is crucial for their applications in spintronic devices. This article reports on the electromigration controlled momentum transfer and rapid ordering of Fe and Pt atoms in the as-deposited FePt films. Lattice defects in the films provide enough diffusion pathways and allow the Fe and Pt atoms rearranging. Through the current driven atomic motion and rearrangement, fast LOPT can result in the establishment of perpendicular magnetic anisotropy of the FePt films at room temperature. This effect is expected to work with other L1(0) typed magnetic materials for spintronic devices development. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4775692]

引用

页数：4

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