Title :
High exchange bias field and low noise IrMn/CoZrNb layers achieved by rapid thermal annealing for perpendicular recording media
Author :
Takenoiri, S. ; Enomoto, K. ; Sakai, Y. ; Watanabe, Shigetaka
Author_Institution :
Fuji Electr. Corporate Res. & Dev. Ltd., Nagano, Japan
Abstract :
Summary form only given. The development of perpendicular HDDs has been constrained by the spike noise that originates from domain walls in soft magnetic layers. An antiferromagnetic (AFM) pinning layer is considered effective to reduce the noise (S. Watanabe et al, Proc. 2001 IEICE gen. conf., vol. 5, p. 35, 2001). However, it is not easy to obtain high exchange bias field (Hex) which is high enough to evade the spike noise. In this study, we reported on low noise media fabricated by the process tailored for mass production. An IrMn AFM layer and rapid thermal annealing (RTA) were employed in the process.
Keywords :
antiferromagnetic materials; cobalt alloys; disc drives; hard discs; interference suppression; iridium alloys; magnetic domain walls; magnetic recording noise; manganese alloys; niobium alloys; perpendicular magnetic recording; rapid thermal annealing; soft magnetic materials; zirconium alloys; AFM pinning layer; IrMn AFM layer; IrMn-CoZrNb; IrMn/CoZrNb layers; RTA; antiferromagnetic pinning layer; high exchange bias field; low noise media; mass production; noise reduction; perpendicular HDD; perpendicular recording media; rapid thermal annealing; soft magnetic layer domain walls; spike noise; Antiferromagnetic materials; Magnetic domain walls; Magnetic domains; Magnetic noise; Magnetosphere; Mass production; Noise reduction; Perpendicular magnetic recording; Rapid thermal annealing; Soft magnetic materials;
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.2002.1001319
