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Effect of laser beam parameters on magnetic properties of Nd–Fe–B thick-film magnets fabricated by pulsed laser deposition


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Title: Effect of laser beam parameters on magnetic properties of Nd–Fe–B thick-film magnets fabricated by pulsed laser deposition
Authors: Fukunaga, Hirotoshi / Kamikawatoko, T. / Nakano, Masaki / Yanai, Takeshi / Yamashita, F.
Issue Date: 1-Apr-2011
Publisher: American Institute of Physics
Citation: Journal of Applied Physics, 109(7), 07A758; 2011
Abstract: The effects of varying the laser power and the spot diameter of a laser beam on the magnetic properties, morphology, and deposition rate of Nd-Fe-B thick-film magnets fabricated by pulsed laser deposition (PLD) were investigated. Reducing the laser fluence on the target reduces the remanence and increases the Nd content and consequently the coercivity of the prepared films. The spot size of the laser beam was found to affect the film surface morphology, the deposition rate, and the reproducibility of the magnetic properties of the prepared films. Reducing the spot size reduces the number of droplets and the reproducibility of the magnetic properties and increases the droplet size. Controlling the spot size of the laser beam enabled us to maximize the deposition rate. Consequently, a coercivity of 1210 kA/m and a remanence of 0.51 T were obtained at a deposition rate of 11.8 μm/(hW). This deposition rate is 30 greater than the highest previously reported deposition rate by PLD.
URI: http://hdl.handle.net/10069/25447
ISSN: 00218979
DOI: 10.1063/1.3566080
Rights: © 2011 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, 109(7), 07A758; 2011] and may be found at http://dx.doi.org/10.1063/1.3566080.
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/25447

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