Articles written in Pramana – Journal of Physics
Volume 8 Issue 1 January 1977 pp 40-49 Molecular Physics
A physical understanding of the nature of the force constants and kinetic constants in molecules leads to a stringent application of the provisions of the group theoretical techniques introduced by Wilson in the study of molecular vibrations. This procedure is applied here to the evaluation of force constants and the mean amplitudes of eighteen tetrahedral XY4 molecules with highly satisfactory results.
Volume 37 Issue 4 October 1991 pp 327-332
Using Wilson’s F-G matrix method a normal co-ordinate analysis of the spectral frequencies and form of the zero-wave vector vibrations of the high temperature superconductor, orthorhombic DyBa2Cu3O7 has been performed. The vibrational frequencies and the potential energy distribution of the 21 infrared-active and 15 Raman-active modes are presented. The potential constants employed here are presented and evaluated vibrational frequencies are compared with the available experimental values.
Volume 40 Issue 2 February 1993 pp 119-122
The critical current densities (
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