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IJPAP Vol.43(10) [October 2005] >

Title: Theoretical study of ABO3 type perovskite with reference to KNbO3
Authors: Singh, Kuldeep
Bhatt, S C
Semwal, B S
Keywords: Perovskite
Shift and width
Spring constants
Issue Date: Oct-2005
Publisher: CSIR
Abstract: One-dimensional model study has been carried out for KNbO3 system by the model Hamiltonian proposed by B D Silverman. Third and fourth order coupling constants, change in coupling constants by doping, spring constants, shift and width have been calculated and the variation of polarization mode frequency and polarization per unit electric field with temperature (T) has been obtained for KNbO3 system. The values obtained are also compared with the values obtained by the Hamiltonian proposed by Pytte.
Page(s): 772-776
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.43(10) [October 2005]

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