Mishra, S. K. ; Mittal, R. ; Choudhury, N. ; Chaplot, S. L. ; Pandey, D. (2008) Inelastic neutron scattering and lattice dynamics of NaNbO3 and Sr0.70Ca0.30TiO3 Pramana - Journal of Physics, 71 (5). pp. 1129-1134. ISSN 0304-4289
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Official URL: http://www.ias.ac.in/pramana/v71/p1129/fulltext.pd...
Related URL: http://dx.doi.org/10.1007/s12043-008-0235-5
Abstract
NaNbO3 and (Sr,Ca)TiO3 exhibit an unusual complex sequence of temperature- and pressure-driven structural phase transitions. We have carried out lattice dynamical studies to understand the phonon modes responsible for these phase transitions. Inelastic neutron scattering measurements using powder samples were carried out at the Dhruva reactor, which provide the phonon density of states. Lattice dynamical models have been developed for SrTiO3 and CaTiO3 which have been fruitfully employed to study the phonon spectra and vibrational properties of the solid solution (Sr,Ca)TiO3.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Lattice Dynamics; Inelastic Neutron Scattering; Ferroelectrics; Antiferroelectric; NaNbO3; - SrTiO3 |
| ID Code: | 88723 |
| Deposited On: | 29 Mar 2012 15:06 |
| Last Modified: | 19 May 2016 03:30 |
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