Magnetic properties of some metastable Co-Ru alloys studied by ion beam mixing and ab initio calculation

被引：5
|
作者：
Wang, W. C. [1 ]
Dai, Y. [1 ]
Wang, T. L. [1 ]
Li, J. H. [1 ]
He, X. [1 ]
Liu, B. X. [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 13期
基金：
中国国家自然科学基金;
关键词：
ab initio calculations; cobalt alloys; ferromagnetic materials; ion beam mixing; magnetic hysteresis; magnetic moments; magnetic multilayers; magnetic transitions; ruthenium alloys; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; SUPERLATTICE STRUCTURES; CO/RU; MAGNETORESISTANCE; SANDWICHES; EXCHANGE; METALS; MULTILAYERS; ATOMS;
D O I：
10.1063/1.3109796
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetic fcc-Co75Ru25 (L1(2)) phase and nonmagnetic fcc-Co25Ru75 (L1(2)) phase are obtained by ion beam mixing in the respective Co-Ru multilayered films. Interestingly, in the Co50Ru50 multilayered films, a magnetic dual-fcc phase, identified to be a mixture consisting of a magnetic fcc-Co75Ru25 and a nonmagnetic fcc-Co25Ru75 phases, is observed at an irradiation dose of 3x10(15) Xe+/cm(2) and, upon further irradiation to a dose of 7x10(15) Xe+/cm(2), transformed into a nonmagnetic single-fcc phase with an alloy composition back to be Co50Ru50.
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页数：3
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