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

Research output: Contribution to journal › Article › peer-review

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

Bibliographical note

Funding Information:
This work was supported by the Natural Sciences and Engineering Research Council of Canada and the Canada Research Chair program. Additional support by the Yonsei Center for Nano Technology (YCNT) is gratefully acknowledged.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2180867

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title = "Uniaxial in-plane magnetic anisotropy of a CoPt thin film induced by ion irradiation",

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.",

author = "Chang, {G. S.} and A. Moewes and Kim, {S. H.} and J. Lee and K. Jeong and Whang, {C. N.} and Kim, {D. H.} and Shin, {S. C.}",

note = "Funding Information: This work was supported by the Natural Sciences and Engineering Research Council of Canada and the Canada Research Chair program. Additional support by the Yonsei Center for Nano Technology (YCNT) is gratefully acknowledged.",

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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.

N1 - Funding Information: This work was supported by the Natural Sciences and Engineering Research Council of Canada and the Canada Research Chair program. Additional support by the Yonsei Center for Nano Technology (YCNT) is gratefully acknowledged.

PY - 2006/2/27

Y1 - 2006/2/27

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

Abstract

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