Structure of Sm-Co/Fe-Co multilayer films with in-plane magnetic anisotropies prepared on MgO(110) single-crystal substrates

被引：3
|
作者：
Ohtake, Mitsuru [1 ]
Hotta, Yusuke [1 ]
Yamada, Makoto [1 ]
Suzuki, Ataru [1 ]
Futamoto, Masaaki [1 ]
Kirino, Fumiyoshi [2 ]
Inaba, Nobuyuki [3 ]
机构：
[1] Chuo Univ, Fac Sci & Engn, Bunkyo Ku, Tokyo 1128551, Japan
[2] Tokyo Univ Arts, Grad Sch Fine Arts, Taito Ku, Tokyo 1108714, Japan
[3] Yamagata Univ, Fac Engn, Yonezawa, Yamagata 9928510, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 400卷
关键词：
SmCo5; Fe-Co; Multilayer film; Epitaxial growth; Single-crystal substrate; Reflection high-energy electron diffraction; EPITAXIAL-GROWTH; THIN-FILMS; ENERGY PRODUCT; COERCIVITY;
D O I：
10.1016/j.jmmm.2015.08.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sm17Co83/Fe65CO35 (at. %) multilayer films are prepared on MgO(110) substrates at 500 degrees C by ultra-high vacuum molecular beam epitaxy. The film crystallographic properties during formation are investigated by in-situ reflection high-energy electron diffraction. The 1st Fe-Co layer epitaxially grows on the substrate with two variants whose orientations are rotated around the film normal by 180 each other. The 1st Sm-Co layer formed on the 1st Fe-Co layer involves a small volume of amorphous phase in addition to epitaxial (1 (1) over bar 00)) crystal of RT5 structure with the c-axis lying in the film plane. The crystallographic quality of 2nd Fe-Co layer is inferior to that of 1st Fe-Co layer. The 2nd Sm-Co layer is composed of polycrystal and amorphous phases. The crystallographic properties of Sm-Co and Fe-Co layers are delicately influenced by those of lower layers. The Sm-Co/Fe-Co multilayer films involving Sm-Co(1 (1) over bar 00)RT5, epitaxial crystal show in-plane uniaxial magnetic anisotropies reflecting the magnetocrystalline anisotropy of SmCo5 crystal. The coercivity increases with increasing the volume of Sm-Co (1 (1) over bar 00)RT5 crystal. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：253 / 261
页数：9
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