Title :
High coercive L10 FePt-X granular films with small opening-up of in-plane hysteresis loop by using conductive TiN intermediate layer
Author :
Chen, Jim S. ; Dong, K.F. ; Li, Hai Helen ; Chow, G.M. ; Hu, Jiang Feng
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Univ. of Singapore, Singapore, Singapore
fDate :
Oct. 31 2012-Nov. 2 2012
Abstract :
The effects of a TiN intermediate layer on the microstructure and magnetic properties of the FePt films were investigated. With introducing TiN intermediate layer the chemical ordering and magnetic properties of FePt films significantly improved. The FePt film with 5nm TiN exhibited a large perpendicular anisotropy and smaller opening-up of in-plane hysteresis loop with out-of-plane coercivity of 13.7 kOe and in-plane coercivity of 0.24 kOe. Moreover, with doping C and SiOx, FePt film with coercivity around 20 kOe, a single layer structure, and small FePt grain size of 5.6 nm in average diameter was obtained.
Keywords :
coercive force; discontinuous metallic thin films; doping; grain size; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic thin films; platinum alloys; titanium compounds; FePt-TiN; chemical ordering; conductive TiN intermediate layer effect; doping effect; grain size; high coercive L10 FePt-X granular films; in-plane coercivity; in-plane hysteresis loop; magnetic properties; microstructures; opening up hysteresis loop; out-of-plane coercivity; perpendicular anisotropy; single layer structure; size 5 nm; Chemicals; Integrated circuits; Magnetic films; Magnetic hysteresis; Magnetic resonance imaging; FePt films; TiN intermediate layer; microstructure; perpendicular media;
Conference_Titel :
APMRC, 2012 Digest
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-4734-1
