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Magnetization Reversal in Half-Metallic Epitaxial CrO2 Films



I L. Siu, William F. Egelhoff Jr., D X. Yang, H D. Chopra


We have investigated the magnetization reversal in thin films of the half-metallic ferromagnet chromium dioxide, CrO2, grown on single crystal TiO2 (100) and (110) substrates. X-ray diffraction analysis indicated epitaxial growth of CrO2 in the rutile crystal structure with the c-axis(also the magnetization easy-axis), lying in the plane of the film. Direct, real-time observation of the magnetization reversal revealed that magnetization reversal occurs via nucleation of Bloch domian walls, and their subsequent motion parallel to themselves. The reversed domains are formed occurs when the applied field is close to the coercive field Hc of the CrO2 film, and the reversal is complete within a short window, indicating a small dispersion in the film switching field.
Journal of Applied Physics
No. 9


chromium dioxide, half-metallic ferromagnet, magnetization reversal


Siu, I. , Egelhoff Jr., W. , Yang, D. and Chopra, H. (2002), Magnetization Reversal in Half-Metallic Epitaxial CrO<sub>2</sub> Films, Journal of Applied Physics (Accessed April 21, 2024)
Created October 31, 2002, Updated October 12, 2021