High coercivity CoCrPt films achieved by post-deposition rapid thermal annealing

Post-deposition rapid thermal annealing (RTA) was performed on multilayered films consisting of a Mn capping layer on top of CoCrPt/CrTi/NiAl. High coercivities were achieved even at low Mrt values and coercivity values increased more than that would have been predicted by the decrease in magnetizat...

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Bibliographic Details
Published in:Journal of applied physics 2000-05, Vol.87 (9), p.6869-6871
Main Authors: Zou, Jie, Lu, Bin, Leonhardt, Todd, Laughlin, David E., Lambeth, David N.
Format: Article
Language:English
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Summary:Post-deposition rapid thermal annealing (RTA) was performed on multilayered films consisting of a Mn capping layer on top of CoCrPt/CrTi/NiAl. High coercivities were achieved even at low Mrt values and coercivity values increased more than that would have been predicted by the decrease in magnetization values. This is most likely due to the significant decrease in intergranular exchange coupling, as shown by the δM measurement. Transmission electron microscopy characterization indicates no apparent grain growth and no visible improvement in CoCrPt crystallographic texture after RTA. It is believed that the preferential diffusion of Mn into CoCrPt grain boundaries promotes magnetic grain isolation.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.372869