Bhide, V. G. ; Multani, M. S. (1966) Mossbauer effect for Fe57 in ferroelectric BaTiO3. II. The vacancy-impurity associated state Physical Review, 149 (1). pp. 289-295. ISSN 0031-899X
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Official URL: http://prola.aps.org/abstract/PR/v149/i1/p289_1
Related URL: http://dx.doi.org/10.1103/PhysRev.149.289
Abstract
In the study of ferroelectric BaTiO3 using the Fe57 mossbauer probe, a variety of environments are encountered by the impurity probes. Velocity spectra have been analyzed to show that the Ti4+ substitution by the probe (Co57)2+ → (Fe57m)3+ or stable (Fe57)3+ results generally in localized charge-compensating oxygen vacancies. Polarization experiments show that the impurity-vacancy complexes are rotatable. The oxygen vacancies are believed to be of the axial type (OI oxygens) in tetragonal BaTiO3. Large nonstoichiometry in reduced samples has been shown to induce an Fe2+ state.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 5008 |
| Deposited On: | 18 Oct 2010 05:34 |
| Last Modified: | 19 May 2011 10:56 |
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