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Characteristic Structural Phase Transition in Perovskite-Type Compounds

✍ Scribed by Müller, K. A.; Berlinger, W.; Waldner, F.


Book ID
124101068
Publisher
The American Physical Society
Year
1968
Tongue
English
Weight
254 KB
Volume
21
Category
Article
ISSN
0031-9007

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Selfconsistent Lattice-Dynamical Theory
✍ B. Pietrass 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 English ⚖ 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