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Enhancement in coercivity of Pulsed Laser Deposition-fabricated Fe-Pt thick film magnets by reducing droplets


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Title: Enhancement in coercivity of Pulsed Laser Deposition-fabricated Fe-Pt thick film magnets by reducing droplets
Authors: Nakano, Masaki / Urakawa, Daisuke / Yanai, Takeshi / Fukunaga, Hirotoshi
Issue Date: 1-Apr-2012
Publisher: American Institute of Physics Inc.
Citation: Journal of Applied Physics, 111(7), 07A737; 2012
Abstract: A high-speed Pulsed Laser Deposition method with the deposition rate of several ten microns per hour followed by a post-annealing process enabled us to obtain isotropic Fe-Pt thick film magnets with the L1 0 order phase. In the study, we investigated the relationship between droplets and coercivity of the post-annealing films. It was found that the reduction in the numbers of droplets enabled us to increase the coercivity although the average deposition rate decreased from 40 to 15 μm per hour. In the samples with Ra less than 0.5 μm, the coercivity exceeded 450 kA/m at the annealing temperature of 673 K. A SEM-EDX analysis of droplets revealed that they tended to have iron-rich or platinum-rich compositions compared with the average one of Fe 50Pt 50.
Keywords: Annealing temperatures / High-speed / Post annealing / SEM-EDX analysis / Thick film magnets
URI: http://hdl.handle.net/10069/30202
ISSN: 00218979
DOI: 10.1063/1.3679566
Rights: © 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 111 (7), art. no. 07A737; 2012 and may be found at http://link.aip.org/link/doi/10.1063/1.3679566.
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/30202

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