Title :
A comparative study of processes for the production of structured barium ferrite films
Author :
Gago-Sandoval, P.A. ; Carey, R. ; Newman, D.M. ; Thomas, B.W.J. ; Palmer, S.B. ; Jackson, T.J. ; Welch, R.G.
Author_Institution :
Centre for Data Storage Mater., Coventry Univ., UK
fDate :
11/1/1994 12:00:00 AM
Abstract :
The magnetic and structural properties of BaFe12O19 films prepared by sputtering are compared with samples deposited using laser ablation deposition (LAD). Both techniques yield as-deposited films that are without crystal structure and consequently non-magnetic. The development of crystal structure and associated magnetic properties after rapid thermal processing (RTP [1]) and ultra-rapid thermal processing using a CO2 laser is presented. Early results indicate that control of the oxygen content of the material is of critical importance during both preparation and subsequent processing. Provided this control is present a material with a significant perpendicular magnetic anisotropy can result from very rapid thermal processing
Keywords :
barium compounds; crystal structure; ferrimagnetic materials; laser beam applications; magnetic anisotropy; pulsed laser deposition; rapid thermal processing; sputtered coatings; stoichiometry; BaFe12O19; BaFe12O19 films; CO2 laser; crystal structure; ferrite films; laser ablation deposition; magnetic anisotropy; magnetic properties; nonmagnetic films; rapid thermal processing; structural properties; ultra-rapid thermal processing; Laser ablation; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic properties; Optical materials; Perpendicular magnetic anisotropy; Production; Rapid thermal processing; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
