Effects of stoichiometry on the magnetic and structural properties of perpendicular barium ferrite thin film media

被引：11
|
作者：
Zhuang, ZL [1 ]
Bian, B
Rao, M
White, RM
Laughlin, DE
机构：
[1] Carnegie Mellon Univ, Data Storage Syst Ctr, Pittsburgh, PA 15213 USA
[2] Carnegie Mellon Univ, Dept Elect & Comp Engn, Pittsburgh, PA 15213 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期
基金：
美国国家科学基金会;
关键词：
barium ferrite; perpendicular c-axis orientation; stoichiometry factor; thin film media;
D O I：
10.1109/20.908447
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effects of stoichiometry factor n on the magnetic and structural properties of perpendicular barium ferrite thin films with composition of BaO .n(Fe2O3) were systematically investigated. Within the range 2.2 < n < 6, the c-axis for barium ferrite thin films can be oriented perpendicularly by the use of Pt underlayer and with optimized processing conditions. Perpendicular c-axis orientation becomes worse as n decreases from 6 to 2.2. The average grain size was greatly reduced from about 2000 Angstrom to 300 Angstrom with the decrease of n. The decrease of the grain size can be related to the existence of nonmagnetic phase BaFe2O4, which was observed by X-ray diffraction.
引用
收藏
页码：2405 / 2407
页数：3
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