Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
4
From page :
383
To page :
386
Abstract :
A general relationship for longitudinal optical (LO) phonons in diatomic cubic crystals is introduced. The analysis of spectroscopic data of diatomic cubic crystals reveals that LO frequencies correlate directly with bulk moduli in a nearest-neighbor fashion. The proportionality constant is found to be dependent only on lattice geometries. Transverse effective charges can be obtained when the Lyddane–Sachs–Teller is incorporated into the model. Our calculations are in excellent agreement with experimental values and theoretical calculations. Some interesting implications of the model are discussed.
Journal title :
Acta Tropica
Serial Year :
2004
Journal title :
Acta Tropica
Record number :
1748337
Link To Document :
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