Effects of an external magnetic field in pulsed laser deposition

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• 作者：T. Garcí ; a ; E. de Posada ; M. Villagrá ; n ; J.L. Sá ; nchez Ll ; P. Bartolo-Pé ; rez ; J.L. Peñ ; a
• 关键词：Magnetic field ; Laser ablation ; Laser deposition
• 刊名：Applied Surface Science
• 出版年：2008
• 出版时间：30 December 2008
• 年：2008
• 卷：255
• 期：5, Part 1
• 页码：2200-2204
• 全文大小：437 K

文摘

Thin films were grown by pulsed laser deposition, PLD, on Si (1 0 0) substrates by the ablation of a sintered ceramic SrFe₁₂O₁₉ target with and without the presence of a nonhomogeneous magnetic field of μ₀H = 0.4 T perpendicular to substrate plane and parallel to the plasma expansion axis. The field was produced by a rectangular-shaped Nd–Fe–B permanent magnet and the substrate was just placed on the magnet surface (Aurora method). An appreciable increment of optical emission due to the presence of the magnetic field was observed, but no film composition change or thickness increment was obtained. It suggests that the increment of the optical emission is due mainly to the electron confinement rather than confinement of ionic species.