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Phonon Relaxation Due to Anharmonism and Central Peak in Structural Phase Transitions I. Soft Optic Modes and Acoustic Phonons in Cubic Crystals

✍ Scribed by V. N. Kashcheev

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
522 KB
Volume
117
Category
Article
ISSN
0370-1972

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Phonon relaxation due to anharmonism and
Phonon relaxation due to anharmonism and central peak in structural phase transitions. II. Soft optic modes in uniaxial ferroelectrics and soft acoustic modes in cubic crystals
✍ V. N. Kashcheev πŸ“‚ Article πŸ“… 1983 πŸ› John Wiley and Sons 🌐 English βš– 473 KB

## Abstract In the modeβ€”mode coupling approximation the critical exponents (CE) are calculated for the dampings and frequency shifts of soft optic modes and acoustic phonons (in uniaxial ferroelectrics) and for the dampings of soft acoustic phonons (in cubic crystals) in the structural transition p