期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 299, 期 2, 页码 487-491出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2005.05.004
关键词
magnetostatic interactions; ferromagnetic nanowires; anisotropy field; amorphous materials; ferromagnetic nanostructures; particulate media
We present a phenomenological model for the interaction field in ferromagnetic nanowire arrays and use it to obtain the effective anisotropy field of individual nanowires, from the in-plane saturation field of the array. In contrast to other methods which may be used to estimate this parameter, the proposed strategy requires no knowledge of the saturation magnetization nor of the nanowire radius. Applied to three arrays of different compositions, this approach yields an equivalent anisotropy field of the individual nanowires approximately equal to M-s/2, indicating that its origin is the demagnetizing field of the wire. (c) 2005 Elsevier B.V. All rights reserved.
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