Applied Physics A

, Volume 74, Issue 6, pp 747–753 | Cite as

Magnetic anisotropy of textured CrO2 thin films investigated by X-ray magnetic circular dichroism

  • E. Goering
  • M. Justen
  • J. Geissler
  • U. Rüdiger
  • M. Rabe
  • G. Güntherodt
  • G. Schütz

Abstract.

Highly a-axis-textured CrO2 films have been deposited on Al2O3 (0001) substrates by chemical vapor deposition. CrO2 has been found to have highly a-axis (010)-oriented columnar growth on a Cr2O3 (0001) initial layer. The six-fold surface symmetry of the Cr2O3 initial layer leads to three equivalent in-plane orientations of the a-axis-oriented CrO2 unit cell. We report Cr L2,3 X-ray magnetic circular dichroism data along the surface normal and at 60° off-normal sample orientation. For a 60° sample alignment, a strong increase of the projected orbital moment could be observed for unoccupied majority t2g states using moment analysis. Therefore, the c axis is identified as the intrinsic magnetic easy axis of CrO2. In addition, a small spin moment and a very strong magnetic dipole term Tz have been found.

PACS: 75.30.Cr; 75.30.Gw; 78.20.Lj; 78.70.Dm; 78.20.Bk 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • E. Goering
    • 1
  • M. Justen
    • 1
  • J. Geissler
    • 1
  • U. Rüdiger
    • 2
  • M. Rabe
    • 2
  • G. Güntherodt
    • 2
  • G. Schütz
    • 1
  1. 1.Max-Plank-Institut für Metallforschung, Heisenbergstrasse 1, 70569 Stuttgart, GermanyDE
  2. 2.Physikalisches Institut, Rheinisch-Westfälische Technische Hochschule Aachen, 52056 Aachen, GermanyDE

Personalised recommendations