Magnetic Anisotropy of Co Films Annealed by Laser Pulses

J. Kisielewski; Kamil Postava; I. Sveklo; A. Nedzved; P. Trzciński; Andrzej Maziewski; B. Szymański; M. Urbaniak; Feliks Stobiecki

doi:10.4028/www.scientific.net/SSP.140.69

Paper Titles

Mesoporous Crystals of Transition Metal Oxides
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Structural, Magnetic and Electronic Properties of Surface Oxidised Fe Nanoparticles
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Nanosized Barium Hexaferrite Powders Obtained by a Single Microemulsion Technique
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Synthesis of Titania Nanostructures and their Application as Catalyst Supports for Hydrogenation and Oxidation Reactions
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Magnetic Anisotropy of Co Films Annealed by Laser Pulses
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First Principle Investigation of Structural Properties of Potassium Doped Fullerene Clusters – K_n(C₆₀)₂
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MD Study of the Endohedral Potassium Ion Fullerene Cluster (K⁺@C₆₀)₇
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Molecular Dynamics Simulation Study of the Liquid Crystal Phase in a Small Mesogene Cluster (5CB)₂₂
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Preparation and Characterization of Polymer/Multi-Walled Carbon Nanotube Nanocomposites
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Magnetic Anisotropy of Co Films Annealed by Laser Pulses

Abstract:

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.