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Independent anharmonic oscillator approximation in the theory of structural phase transitions in crystals

✍ Scribed by M. B. Smirnov; J. Hlinka

Book ID
110125551
Publisher
SP MAIK Nauka/Interperiodica
Year
2000
Tongue
English
Weight
90 KB
Volume
42
Category
Article
ISSN
1063-7834

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πŸ“œ SIMILAR VOLUMES

Phase transition in an ensemble of anhar
Phase transition in an ensemble of anharmonic oscillators
✍ R.K. Agrawal; V.S. Varma πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 272 KB

We show the existence ofa phase transition at b=O in an ensemble of non-interacting one-dimensional anharmonic oscillators each moving under the influence of the potential V(X) =a.?( It bx\*/Za)'. This is a consequence of the abrupt change in the nature of the energy eigenvalue spectrum of each osci

Selfconsistent Lattice-Dynamical Theory
Selfconsistent Lattice-Dynamical Theory of Structural Phase Transitions in Perovskite-Type Crystals
✍ B. Pietrass πŸ“‚ Article πŸ“… 1972 πŸ› John Wiley and Sons 🌐 English βš– 457 KB

## Abstract The temperature dependence of the soft mode frequency and of the displacement parameter, associated with the structural phase transition in perovskite‐type crystals, is calculated from anharmonic lattice dynamics in a selfconsistent way. The theory describes the change‐over from the Lan