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- Title
Theoretical studies of the g factors and local structure for Pt in α-AlO.
- Authors
ZHANG, Z; WU, S; ZHANG, S; LI, L
- Abstract
The anisotropic g factors and local structure for the trigonal Pt centre in α-AlO are theoretically investigated from the perturbation formulas of the g factors for a 5 d ion in trigonal symmetry. The Pt impurity is found to experience an outward displacement by about 0.18 Å away from the centre of the oxygen octahedron along the C-axis. The calculated g factors based on the above axial displacement show good agreement with the observed values. Importantly, the pending problem of +3 valence state of the doped Pt in α-AlO is theoretically clarified, and the possibility of Pt (5 d) is thus excluded in this work.
- Subjects
MICROSTRUCTURE; QUANTUM perturbations; ALUMINUM oxide; OXYGEN; VALENCE (Chemistry); MATHEMATICAL formulas
- Publication
Pramana: Journal of Physics, 2012, Vol 78, Issue 3, p475
- ISSN
0304-4289
- Publication type
Article
- DOI
10.1007/s12043-011-0250-9