Rutile CoxTi1-xO2-δ (100) films were heteroepitaxially grown on GaN (0001) and ZnO (0001) by pulsed laser deposition. Magneto-optical Kerr effect measurements indicated that the Co xTi1-xO2-δ films grown at appropriate oxygen partial pressure show room-temperature ferromagnetism both on GaN (0001) and ZnO (0001) substrate. XRD and cross-sectional TEM measurements confirmed solid solution of Co in rutile TiO2 matrix without any precipitates and secondary phases. High-resolution TEM observation of the Co xTi1-xO2-δ/GaN interface revealed atomically smooth interface without intermixing, which promises the application of CoxTi1-xO2-δ in opto-spintronics devices as a spin injector.
|Number of pages||3|
|Journal||Physica Status Solidi (C) Current Topics in Solid State Physics|
|Publication status||Published - 2008 Dec 1|
|Event||34th International Symposium on Compound Semiconductors, ISCS-2007 - Kyoto, Japan|
Duration: 2007 Oct 15 → 2007 Oct 18
ASJC Scopus subject areas
- Condensed Matter Physics