The influence of grain morphology and easy axis orientation on the coercivity of Sm(Co0.9Cu0.1)5 thin films

被引：20
作者：
Cui, W. B. [1 ]
Ma, L. [1 ]
Sepehri-Amin, H. [1 ]
Takahashi, Y. K. [1 ]
Hono, K. [1 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
ACTA MATERIALIA | 2016年 / 107卷
关键词：
Permanet magnet; Coercivity; SmCo5; Micromagnetic; Thin film; NONMAGNETIC SPACER; ENERGY PRODUCT; MICROSTRUCTURE; DEPENDENCE; MAGNET;
D O I：
10.1016/j.actamat.2016.01.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sm(Co0.9Cu0.1)(5) single-layer thin films and Sm(Co0.9Cu0.1)(5)/Fe2Co exchange coupled bilayer films with c-axis in the plane (IP) and out of the plane (OOP) orientations were prepared on MgO and Al2O3 single crystalline substrates by magnetron sputtering. Clear relationship between the grain morphology and coercivity was observed for the Sm(Co0.9Cu0.1)(5) single-layer films. We found the thermal stability of coercivity is largely influenced by the c-axis orientation because the c-axis IP geometry lowers magnetostatic effect that plays an increasing role at elevated temperature. In Sm(Co0.9Cu0.1)(5)/Fe2Co bilayer films with the two c-axis geometries, the coercivity show larger dependence on the thickness of the Fe2Co layer for the c-axis IP geometry due to the energetically unfavorable magnetostatic coupling between hard/soft-magnetic layers, which is supported by micromagnetic simulations. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：49 / 58
页数：10
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