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

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2002

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Goering, Eberhard
Justen, M.
Geissler, Jochen
Rabe, M.
Güntherodt, Gernot
Schütz, Gisela

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-53079
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https://doi.org/10.1007/s003390201302
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Applied Physics / A, Materials Science and Processing. 2002, 74, pp. 747-753. Available under: doi: 10.1007/s003390201302

Zusammenfassung

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 sixfold 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.

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530 Physik

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ISO 690GOERING, Eberhard, M. JUSTEN, Jochen GEISSLER, Ulrich RÜDIGER, M. RABE, Gernot GÜNTHERODT, Gisela SCHÜTZ, 2002. Magnetic anisotropy of textured CrO2 thin films investigated by X-ray magnetic circular dichroism. In: Applied Physics / A, Materials Science and Processing. 2002, 74, pp. 747-753. Available under: doi: 10.1007/s003390201302
BibTex
@article{Goering2002Magne-4703,
  year={2002},
  doi={10.1007/s003390201302},
  title={Magnetic anisotropy of textured CrO2 thin films investigated by X-ray magnetic circular dichroism},
  volume={74},
  journal={Applied Physics / A, Materials Science and Processing},
  pages={747--753},
  author={Goering, Eberhard and Justen, M. and Geissler, Jochen and Rüdiger, Ulrich and Rabe, M. and Güntherodt, Gernot and Schütz, Gisela}
}
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