Magneto-optical properties of Sr-ferrite films produced by pulsed laser ablation

Author

Papakonstantinou, P. ; Atkinson, R. ; O´Neill, M. ; Salter, I.W. ; Gerber, R.

Author_Institution

Dept. of Pure & Appl. Phys., Queen´´s Univ., Belfast, UK

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3283

Lastpage

3285

Abstract

The effect of substrate temperature and oxygen pressure on the microstructure and magneto-optical (m-o) properties of Sr-ferrite films grown on (001) single crystal sapphire substrates by pulsed laser deposition has been investigated. The results demonstrated that smooth c-axis oriented films, could only be prepared at a narrow operational window of the useful oxygen pressure and at high substrate temperatures. The best films were deposited at a substrate temperature of 840°C, and in an oxygen atmosphere of about 0.1 mbar. These were of good optical quality, hard to scratch, with c-axis oriented perpendicular to the film plane and exhibited bulk m-o properties

Keywords

Kerr magneto-optical effect; X-ray diffraction; atomic force microscopy; ferrites; magnetic thin films; pulsed laser deposition; scanning electron microscopy; strontium compounds; visible spectra; (001) single crystal sapphire substrates; 0.1 mbar; 840 C; AFM; Al₂O₃; O₂ pressure; SEM; Sr-ferrite films; SrFe₁₂O₁₉; X-ray diffraction; c-axis oriented films; magneto-optical properties; optical quality; polar Kerr hysteresis loops; polar Kerr rotation spectra; pulsed laser ablation; scratch hardness; substrate temperature; Ferrite films; Laser ablation; Magnetic properties; Magnetooptic effects; Optical films; Optical pulses; Perpendicular magnetic recording; Pulsed laser deposition; Substrates; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490361

Filename

490361