Uniaxial in-plane magnetic anisotropy of a CoPt thin film induced by ion irradiation

G. S. Chang; A. Moewes; S. H. Kim; J. Lee; K. Jeong; C. N. Whang; D. H. Kim; S. C. Shin

doi:10.1063/1.2180867

Uniaxial in-plane magnetic anisotropy of a CoPt thin film induced by ion irradiation

G. S. Chang, A. Moewes, S. H. Kim, J. Lee, K. Jeong, C. N. Whang, D. H. Kim, S. C. Shin

Department of Physics

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22 Citations (Scopus)

Abstract

The mechanism for ion-induced uniaxial magnetic anisotropy of ferromagnetic CoPt thin films is investigated using x-ray diffraction and soft x-ray emission spectroscopy. When CoPt multilayers 64 nm thick are irradiated with 80 keV Ar+ ions in an externally applied magnetic field, the magnetization of the ion-irradiated area shows a significant anisotropic angular dispersion in its hysteresis. Analysis of x-ray diffraction patterns and Co L3 emission spectra reveals that the formation of partially ordered (face-centered-tetragonal) CoPt phase and nonequivalent electronic hybridization between easy and hard axes causes the induction of a uniaxial magnetic anisotropy.

Original language	English
Article number	092504
Journal	Applied Physics Letters
Volume	88
Issue number	9
DOIs	https://doi.org/10.1063/1.2180867
Publication status	Published - 2006 Feb 27

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All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Cite this

Chang, G. S., Moewes, A., Kim, S. H., Lee, J., Jeong, K., Whang, C. N., Kim, D. H., & Shin, S. C. (2006). Uniaxial in-plane magnetic anisotropy of a CoPt thin film induced by ion irradiation. Applied Physics Letters, 88(9), [092504]. https://doi.org/10.1063/1.2180867

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abstract = "The mechanism for ion-induced uniaxial magnetic anisotropy of ferromagnetic CoPt thin films is investigated using x-ray diffraction and soft x-ray emission spectroscopy. When CoPt multilayers 64 nm thick are irradiated with 80 keV Ar+ ions in an externally applied magnetic field, the magnetization of the ion-irradiated area shows a significant anisotropic angular dispersion in its hysteresis. Analysis of x-ray diffraction patterns and Co L3 emission spectra reveals that the formation of partially ordered (face-centered-tetragonal) CoPt phase and nonequivalent electronic hybridization between easy and hard axes causes the induction of a uniaxial magnetic anisotropy.",

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AU - Chang, G. S.

AU - Moewes, A.

AU - Kim, S. H.

AU - Lee, J.

AU - Jeong, K.

AU - Whang, C. N.

AU - Kim, D. H.

AU - Shin, S. C.

PY - 2006/2/27

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N2 - The mechanism for ion-induced uniaxial magnetic anisotropy of ferromagnetic CoPt thin films is investigated using x-ray diffraction and soft x-ray emission spectroscopy. When CoPt multilayers 64 nm thick are irradiated with 80 keV Ar+ ions in an externally applied magnetic field, the magnetization of the ion-irradiated area shows a significant anisotropic angular dispersion in its hysteresis. Analysis of x-ray diffraction patterns and Co L3 emission spectra reveals that the formation of partially ordered (face-centered-tetragonal) CoPt phase and nonequivalent electronic hybridization between easy and hard axes causes the induction of a uniaxial magnetic anisotropy.

AB - The mechanism for ion-induced uniaxial magnetic anisotropy of ferromagnetic CoPt thin films is investigated using x-ray diffraction and soft x-ray emission spectroscopy. When CoPt multilayers 64 nm thick are irradiated with 80 keV Ar+ ions in an externally applied magnetic field, the magnetization of the ion-irradiated area shows a significant anisotropic angular dispersion in its hysteresis. Analysis of x-ray diffraction patterns and Co L3 emission spectra reveals that the formation of partially ordered (face-centered-tetragonal) CoPt phase and nonequivalent electronic hybridization between easy and hard axes causes the induction of a uniaxial magnetic anisotropy.

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10.1063/1.2180867