• Rapid Communication

High-resolution observations of temperature-dependent magnetic domain structures within GaxMn1−xAs by Lorentz microscopy

Akira Sugawara, T. Akashi, P. D. Brown, R. P. Campion, T. Yoshida, B. L. Gallagher, and A. Tonomura
Phys. Rev. B 75, 241306(R) – Published 26 June 2007
PDFHTMLExport Citation
Abstract
Authors
Article Text
  • ACKNOWLEDGEMENTS
    • Supplemental Material
    References

    Abstract

    The observation of magnetic domain structures within an in-plane magnetized GaxMn1−xAs dilute magnetic semiconductor on the submicronmeter scale by Lorentz microscopy is described. A micronmeter-scale domain substructure is found to be characteristic of the micromagnetics of the GaxMn1−xAs sample. Due to the competition of temperature-dependent biaxial and uniaxial anisotropy, conventional zigzag and unusual segmented domain structures are identified, with the latter exhibiting spontaneous reorganization with varying temperature. The experimental results are compared with micromagnetic simulations.

    • Figure
    • Figure
    • Figure
    • Figure
    • Received 23 April 2007

    DOI:https://doi.org/10.1103/PhysRevB.75.241306

    ©2007 American Physical Society

    Authors & Affiliations

    Akira Sugawara1,*, T. Akashi2,†, P. D. Brown3, R. P. Campion4, T. Yoshida2, B. L. Gallagher4, and A. Tonomura1,2

    • 1Initial Research Project, Okinawa Institute of Science and Technology, c/o Hitachi Advanced Research Laboratory, Akanuma 2520, Hatoyama, Saitama 350-0395, Japan
    • 2Advanced Research Laboratory, Hitachi Ltd., Akanuma 2520, Hatoyama, Saitama 350-0395, Japan
    • 3School of Mechanical, Materials & Manufacturing Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
    • 4School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom

    • *Present address: Advanced Research Laboratory, Hitachi Ltd. Electronic address: akira.sugawara.ne@hitachi.com
    • †Also at the Hitachi High-tech Fielding Corporation.

    Article Text (Subscription Required)

    Click to Expand

    Supplemental Material (Subscription Required)

    Click to Expand

    References (Subscription Required)

    Click to Expand
    Issue

    Vol. 75, Iss. 24 — 15 June 2007

    Reuse & Permissions
    Access Options
    Author publication services for translation and copyediting assistance advertisement

    Authorization Required

    Log In
    Other Options
    ×

    Download & Share

    PDFExportReuse & PermissionsCiting Articles (11)
    ×

    Images

    ×

    Sign up to receive regular email alerts from Physical Review B

    Log In

    Cancel
    ×

    Search

    Article Lookup

    Paste a citation or DOI
    Enter a citation
    ×