Study of annealed Co thin films deposited by ion beam sputtering

This paper presents structural, magnetic and transport property measurements carried out on as deposited as well as annealed Co ( 400 Å ) thin films. The magnetization measurements carried out using a magneto-optical Kerr effect (MOKE) technique show large increases in coercivity and saturation fiel...

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Bibliographic Details
Published in:Journal of vacuum science & technology. A, Vacuum, surfaces, and films Vacuum, surfaces, and films, 2006-01, Vol.24 (1), p.74-77
Main Authors: Sharma, A., Brajpuriya, R., Tripathi, S., Chaudhari, S. M.
Format: Article
Language:English
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Summary:This paper presents structural, magnetic and transport property measurements carried out on as deposited as well as annealed Co ( 400 Å ) thin films. The magnetization measurements carried out using a magneto-optical Kerr effect (MOKE) technique show large increases in coercivity and saturation field values with annealing of the samples at higher temperatures. However, corresponding resistivity measurements show a gradual decrease in resistivity and drops to minimum at 500 ° C . Observed magnetization and resistivity behavior is mainly attributed to (i) change in crystal structure from hcp to fcc; (ii) increase in grain size; and (iii) stress relaxation due to the annealing treatment as revealed by x-ray diffraction measurements.
ISSN:0734-2101
1520-8559
DOI:10.1116/1.2135292