We show that under certain conditions, highly Co-enriched Ti02 anatase clusters nucleate on epitaxial Ti02 anatase grown on LaA1O3(001) by oxygen plasma assisted molecular beam epitaxy. In the most extreme cases, virtually all incident Co segregates to the clusters, yielding a nanoscale ferromagnitic phase that is not ferromagnetic in homogeneous films of the same Co concentration. The nucleation of this phase simultaneous with continuous epitaxial film growth must be carefully monitored in order to avoid drawing false conclusions about the film structure
Revised: August 18, 2014 |
Published: February 24, 2003
Citation
Chambers S.A., T.C. Droubay, C.M. Wang, A.S. Lea, R. Farrow, L. Folks, and V. Deline, et al. 2003.Clusters and Magnetism in Epitaxial Co-doped TiO2 Anatase.Applied Physics Letters 82, no. 8:1257-1259.PNNL-SA-37993.