Modifications of magnetic anisotropy and magnetization reversal in [Co<sup>0.4 nm</sup>/Pd<sup>0.7 nm</sup>]₅₀ multilayers induced by 10 keV-He ion bombardment - Research Information System | University of Kassel

Journal article

Modifications of magnetic anisotropy and magnetization reversal in [Co^{0.4 nm}/Pd^{0.7 nm}]₅₀ multilayers induced by 10 keV-He ion bombardment

Publication Details

Authors:

Ehresmann, A.; Hellwig, O.; Buhl, O.; Müglich, N.; Weis, T.; Engel, D.

Publication year:

2012

Journal:

Journal of Applied Physics

Pages range:

063901

Volume number:

112

ISSN:

0021-8979

DOI:	http://dx.doi.org/10.1063/1.4752274

URN / URL:

http://dx.doi.org/10.1063/1.4752274

Abstract

[Co^{0.4 nm}/Pd^{0.7 nm}]₅₀multilayers with Pd film thicknesses in the first ferromagnetic maximum of interlayer exchange coupling display almost purely perpendicular-to-plane anisotropy and labyrinth stripe domain patterns in remanence. Their magnetization reversal is characterized by domain nucleation starting at a defined field H_N and domain wall movement in a defined magnetic field range. The modification of the magnetization reversal by 10 keV He ion bombardment due to the reduced magnetic anisotropy has been investigated by polar magneto-optical Kerr effect, by vibrating sample magnetometry, and by magnetic force microscopy at room temperature. It is shown that the ion bombardment creates and increases areas with ferromagnetic in-plane anisotropy and proportions of the sample showing superparamagnetism, the latter predominantly in the deeper layers.

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Last updated on 2019-25-07 at 16:53

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