Mössbauer Study of the SrTi:System
- 15 July 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 159 (3), 586-593
- https://doi.org/10.1103/physrev.159.586
Abstract
The Mössbauer investigation of the SrTi: system has indicated the coexistence of low-spin () and high-spin () ferric states, in contrast to the EPR studies which have shown that iron enters the SrTi lattice at the site in its high-spin trivalent () state. The relative intensities of the low-spin high-spin ferric states could be altered by thermal treatment. In highly reduced samples, high-spin ferric () and high-spin ferrous () states have been observed with an associated charge-compensating oxygen vacancy. The cubic-tetragonal phase transition at 110°K, caused by the accidental degeneracy of longitudinal acoustic and transverse optical modes, has been detected through the temperature variation of isomer shift of the high-spin ferric state.
Keywords
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