Title :
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
fDate :
11/1/1995 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
