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

Research output: Contribution to journalArticle

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 languageEnglish
Article number092504
JournalApplied Physics Letters
Volume88
Issue number9
DOIs
Publication statusPublished - 2006 Feb 27

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Uniaxial in-plane magnetic anisotropy of a CoPt thin film induced by ion irradiation'. Together they form a unique fingerprint.

  • 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