Title :
High exchange coupling field and thermal stability of ferromagnetic IrMn-pinned spin valve films
Author :
Hwang, Jae ; Kim, Moon-Young ; Rhee, J.R. ; Lee, S.S. ; Hwang, Do Guwn ; Yu, S.C.
Author_Institution :
Dept. of Phys., Sookmyung Women´s Univ., Seoul, South Korea
Abstract :
Summary form only given. Various antiferromagnetic (AFM) materials have been investigated in order to obtain higher thermal stability and reliability of the pinned layer for use in spin valve (SV) giant magnetoresistance (GMR) heads in high density magnetic recording. We have found that AFM Ir/sub 22/Mn/sub 78/ alloy films exchange coupled to Co/sub 75/Fe/sub 25/ films showed a large exchange coupling field (H/sub ex/) of 1,180 Oe and succeeded in developing GMR/SV, which is suitable for narrow gap head structure. In this paper, the MR properties and exchange coupling in bottom-type IrMn based SV films with high thermal stability were investigated.
Keywords :
antiferromagnetic materials; cobalt alloys; exchange interactions (electron); ferromagnetic materials; giant magnetoresistance; interface magnetism; iridium alloys; iron alloys; magnetic heads; manganese alloys; spin valves; thermal stability; Co/sub 75/Fe/sub 25/; GMR; Ir/sub 22/Mn/sub 78/ alloy film; Ir/sub 22/Mn/sub 78/-Co/sub 75/Fe/sub 25/; MR properties; antiferromagnetic materials; exchange coupling; ferromagnetic IrMn-pinned spin valve films; high density magnetic recording; high exchange coupling field; large exchange coupling field; narrow gap head; reliability; spin valve giant magnetoresistance heads; thermal stability; Antiferromagnetic materials; Giant magnetoresistance; Magnetic films; Magnetic heads; Magnetic materials; Magnetic recording; Manganese alloys; Materials reliability; Spin valves; Thermal stability;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001199
