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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
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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