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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
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
Polarization
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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