Seivastava, J. K. ; Muralidhara Rao, S. ; Nagarajan, R. ; Vijayaraghavan, R. (1987) Mössbauer effect, ionic conductivity, and ionic thermoconductivity studies of ionic spin fluctuations in the magnetically ordered Fe3+: NiTiO3 system Physica Status Solidi A, 102 (2). pp. 759-768. ISSN 0031-8965
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pssa.22...
Related URL: http://dx.doi.org/10.1002/pssa.2211020238
Abstract
Mössbauer measurements are carried out in the NiTiO3-25 mol% Fe2O3 system when the system is prepared by annealing at different annealing temperatures. Anomalous Mössbauer spectra are observed in the 1280°C-annealed sample indicating the presence of an ionic spin fluctuation effect which disappears when the annealing temperature of the solid solution is increased. In the 1450°Cannealed system only normal Mössbauer spectra without any anomalous central enhancement are observed. This result can be understood by assuming an inhomogeneous diffusion of the Fe3+ ions in the 1280°C-annealed sample and their uniform distribution in the 1450°C-annealed sample. Ionic conductivity and ionic thermoconductivity measurements, carried out in NiTiO3−, Fe2O3−, and NiTiO3−25 mol% Fe2O3 systems, support this assumption.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley and Sons. |
ID Code: | 61656 |
Deposited On: | 15 Sep 2011 11:48 |
Last Modified: | 15 Sep 2011 11:48 |
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