Granular nanostructures and magnetic properties of FePt-C/FePt-SiO2 films

被引：5
|
作者：
Zhang, Luran [1 ]
Liu, Liwang [1 ]
Hayasaka, Kouji [3 ,4 ]
Ishio, Shunji [1 ,2 ]
机构：
[1] Akita Univ, Venture Business Lab, Akita 010, Japan
[2] Akita Univ, Dept Mat Sci & Engn, Akita 010, Japan
[3] Minist Educ Culture Sports Sci & Technol MEXT, Nanotechnol Platform, Tokyo, Japan
[4] Tohoku Univ, Ctr Integrated Nanotechnol Support, Sendai, Miyagi 980, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 651卷
关键词：
Magnetic films and multilayers; Magnetic measurements; Thin films; THIN-FILMS; MEDIA;
D O I：
10.1016/j.jallcom.2015.08.106
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
FePt-C, FePt-SiO2 and FePt-C/FePt-SiO2 films with different segregants concentration on glass substrate with polycrystalline MgO underlayer have been successfully fabricated by magnetron sputtering system. It was found that the FePt-C films had larger coercivity(H-c), chemical order parameter(S) and smaller diameter of the local interaction zone(D-n) but wider magnetic coercive force distribution(Delta H-c/H-c) than that of the FePt-SiO2 films. By using FePt-C/FePt-SiO2 bilayer structure, the low D-n and Delta H-c/H-c were obtained. FePt-C30vol%(4 nm)/FePt-SiO(2)45vol%(4 nm) film with Hc higher than 29 kOe and columnar FePt grains of 10 nm in diameter and 13 nm in height were obtained, which would be very suitable for heat assisted magnetic recording media. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：389 / 392
页数：4
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