Structure and magnetic properties of nanocomposite (Nd, Dy)-(Fe, Co)-B/α-Fe thin films with perpendicular magnetic anisotropy

被引：7
|
作者：
Yao, Q.
Liu, W. [1 ]
Cui, W. B.
Yang, F.
Zhao, X. G.
Zhang, Z. D.
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 03期
关键词：
PERMANENT-MAGNETS; EXCHANGE;
D O I：
10.1088/0022-3727/42/3/035007
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Exchange coupling is observed in the (Nd, Dy)-(Fe, Co)-B/alpha-Fe films with perpendicular magnetic anisotropy, with a maximum energy product (BH)(max) of 16.2MGOe and a coercivity H-i(c) of 11.2 kOe. The existence of soft alpha-Fe in the films is verified by the two-step reversal process at low temperatures and x-ray diffraction as well as x-ray photoelectron spectroscopy analysis. In comparison with its single-phase counterpart, the anisotropic (Nd, Dy)-(Fe, Co)-B/alpha-Fe film displays a more inhomogeneous magnetic-domain structure. The aligned nanocomposite film demonstrates anisotropic demagnetization behaviour, with the homogeneous reversal process becoming inhomogeneous as the field deviates from perpendicular to parallel to the film plane.
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页数：5
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