Magnetic anisotropy of textured CrO 2 thin films investigated by X-ray magnetic circular dichroism | Zendy

E. Goering | Zendy; M. Justen | Zendy; J. Geissler | Zendy; U. Rüdiger | Zendy; M. Rabe | Zendy; G. Güntherodt | Zendy; Gisela Schütz | Zendy

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Magnetic anisotropy of textured CrO 2 thin films investigated by X-ray magnetic circular dichroism

Author(s) -

E. Goering,

M. Justen,

J. Geissler,

U. Rüdiger,

M. Rabe,

G. Güntherodt,

Gisela Schütz

Publication year - 2002

Publication title -

applied physics a

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.485

H-Index - 149

eISSN - 1432-0630

pISSN - 0947-8396

DOI - 10.1007/s003390201302

Subject(s) - magnetic moment , magnetic anisotropy , x ray magnetic circular dichroism , magnetic circular dichroism , anisotropy , condensed matter physics , dipole , materials science , magnetic dipole , thin film , moment (physics) , crystallography , optics , chemistry , nuclear magnetic resonance , magnetization , magnetic field , physics , spectral line , nanotechnology , quantum mechanics , astronomy , organic chemistry , classical mechanics

. 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.

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