Six-fold in-plane magnetic anisotropy in Co-implanted ZnO (0001)

Numan Akdogan; Bulat Rameev; Sumeyra Guler; Osman Ozturk; Bekir Aktas; Hartmut Zabel; Rustam Khaibullin; Lenar Tagirov

doi:10.1063/1.3223583

Six-fold in-plane magnetic anisotropy in Co-implanted ZnO (0001)

Mesoscale and Nanoscale Physics 2010-04-27 v1 Materials Science

Authors: Numan Akdogan , Bulat Rameev , Sumeyra Guler , Osman Ozturk , Bekir Aktas , Hartmut Zabel , Rustam Khaibullin , Lenar Tagirov

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Abstract

Magnetic anisotropies of Co-implanted ZnO (0001) films grown on single-crystalline Al2O3 (11-20) substrates have been studied by ferromagnetic resonance (FMR) technique for different cobalt implantation doses. The FMR data show that the easy and hard axes have a periodicity of 60 degrees in the film plane, in agreement with the hexagonal structure of the ZnO films. This six-fold in-plane magnetic anisotropy, which is observed for the first time in ZnO-based diluted magnetic semiconductors, is attributed to the substitution of cobalt on Zn sites in the ZnO structure, and a clear indication for long range ferromagnetic ordering between substitutional cobalt ions in the single-crystalline ZnO films.

Keywords

magnetic anisotropy co-implanted ZnO ferromagnetic resonance diluted magnetic semiconductors six-fold symmetry long-range ferromagnetic ordering

Cite

@article{arxiv.1004.4291,
  title  = {Six-fold in-plane magnetic anisotropy in Co-implanted ZnO (0001)},
  author = {Numan Akdogan and Bulat Rameev and Sumeyra Guler and Osman Ozturk and Bekir Aktas and Hartmut Zabel and Rustam Khaibullin and Lenar Tagirov},
  journal= {arXiv preprint arXiv:1004.4291},
  year   = {2010}
}

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7 pages, 4 figures

Six-fold in-plane magnetic anisotropy in Co-implanted ZnO (0001)

Abstract

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