The annealing effect on GMR properties of PtMn-based spin valve

被引：9
作者：
Kim, MJ
Kim, HJ
Kim, KY
Jang, SH
Kang, T
机构：
[1] Korea Inst Sci & Technol, Thin Film Technol Res Ctr, Seungbuk Gu, Seoul 136791, South Korea
[2] Seoul Natl Univ, Sch Mat Sci & Engn, Kwanak Gu, Seoul, South Korea
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 239卷 / 1-3期
关键词：
spin valves; thermal stability; second annealing treatment;
D O I：
10.1016/S0304-8853(01)00554-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The second annealing effect on GMR properties has been investigated for postdeposition-annealed PtMn spin valve. A sudden change in MR ratio, exchange bias field and inter-layer coupling field occurred at about 325degreesC. This annealing temperature is close to the blocking temperature for the PtMn spin valve indicating 310degreesC. It is considered that the FCT structure of PtMn layer can promote Mn diffusion through the grain boundary, leading to a sudden decrease in magnetic properties. Therefore, PtMn layer as an anti ferromagnetic material may not be suitable for the advanced head material. (C) 2002 Elsevier Science B.V, All rights reserved.
引用
收藏
页码：195 / 197
页数：3
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