期刊
JOURNAL OF APPLIED PHYSICS
卷 111, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3673823
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资金
- U.S. Office of Naval Research
- ONR [N00014-06-1-0530]
- National Science Foundation (NSF) via MRSEC center
- National Science Foundation (NSF) via NNIN center
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1000863] Funding Source: National Science Foundation
In this work, magnetization reversal mechanisms in various 35 nm diameter Fe80Ga20/Cu multilayered nanowire arrays were studied by a vibrating sample magnetometer (VSM) equipped with vector coils, making it possible to monitor both x- and y-components of the sample moment during reversal. When reversal fields were applied in the low angular range (0-60 degrees), all nanowire structures, irrespective of Fe80Ga20 or Cu aspect ratios, experienced reversal by nucleation and propagation of a vortex domain wall. However, when fields were applied in the high angular range of 60-90 degrees, reversal occurred by coherent rotation. Using vector-VSM, it was further shown that in structures with pancake-like Fe80Ga20 segments, the extent to which moments in adjacent segments rotate cooperatively decreased as the Cu thickness increased. (C) 2012 American Institute of Physics. [doi:10.1063/1.3673823]
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