Magnetic Anisotropy of Co Films Annealed by Laser Pulses

Abstract:

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The magnetic properties of an ultrathin cobalt film were modified by a focused femtosecond pulsed laser beam. The Co wedge, with a thickness ranging from 0 to 2 nm, sandwiched by Au films was prepared using ultra-high vacuum magnetron sputtering on a mica substrate. The modifications of the laser induced magnetic anisotropy were investigated using magneto-optic Kerr microscopy and MFM/AFM techniques. The laser induces: (i) local reorientation of magnetization from an in-plane to a perpendicular state and (ii) an increase of the coercivity field. A corresponding increase of the perpendicular magnetic anisotropy is discussed considering an improvement of the Co/Au interfaces.

Info:

Periodical:

Solid State Phenomena (Volume 140)

Edited by:

Witold Łojkowski and John R. Blizzard

Pages:

69-74

DOI:

10.4028/www.scientific.net/SSP.140.69

Citation:

J. Kisielewski et al., "Magnetic Anisotropy of Co Films Annealed by Laser Pulses", Solid State Phenomena, Vol. 140, pp. 69-74, 2008

Online since:

October 2008

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$35.00

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