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

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4824

Lastpage

4826

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334234

Filename

334234