Soft Phonon Modes and the 110°K Phase Transition in SrTi
- 1 July 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 21 (1) , 16-19
- https://doi.org/10.1103/physrevlett.21.16
Abstract
We propose a new interpretation of the 110°K phase transition in SrTi, in which the essential feature is a soft phonon at the corner of the cubic Brillouin zone. This interpretation is supported by new evidence from the temperature-dependent Raman spectrum as well as by results of earlier experiments and calculations. Several other experimental results are explained or predicted on the basis of our model for the phase transition.
Keywords
This publication has 14 references indexed in Scilit:
- Raman Spectrum of Strontium TitanateThe Journal of Chemical Physics, 1968
- Electron Spin Resonance of Fe3+ in SrTiO3 with Special Reference to the 110°K Phase TransitionJournal of the Physics Society Japan, 1967
- Evidence for the presence of a first order Raman spectrum in the high temperature phase of SrTiO3Solid State Communications, 1967
- Magnetoresistance and conduction electron-impurity spin coupling in dilute silver alloysSolid State Communications, 1967
- First- and Second-Order Raman Scattering of SrTiO3The Journal of Chemical Physics, 1967
- Brillouin- and critical light scattering in SrTiO3-crystalsPhysics Letters, 1966
- X-Ray Diffractometry of Low-Temperature Phase Transformations in Strontium TitanateJournal of Applied Physics, 1964
- Lattice Dynamics and Phase Transitions of Strontium TitanatePhysical Review B, 1964
- Electron Paramagnetic Resonance of Trivalent Gadolinium Ions in Strontium and Barium TitanatesPhysical Review B, 1962
- Microwave Losses in Strontium Titanate above the Phase TransitionPhysical Review B, 1962