Abstract
We have investigated the elastic and thermodynamic properties for the perovskite type metavanadate SrVO 3 and the multiferroic PbVO 3, probably for the first time by the means of a Modified Rigid Ion Model (MRIM). We present the elastic constants ( C 11, C 12, C 44) and other elastic properties like Bulk modulus ( B), Young′s modulus ( E), shear modulus ( G), Poisson′s ratio ( σ) and wave velocity ( υ l, υ s, υ m). Besides we have reported the thermodynamic properties molecular force constant ( f), Reststrahlen frequency ( ν), cohesive energy ( ϕ), Debye temperature ( θ D) and Gruneisen parameter ( γ). We have also computed the variation of heat capacity ( C P) and there by volume thermal expansion coefficient ( α) in a wide temperature range. We found that the computed properties reproduce well with the available data in literature. To our knowledge some of the properties are reported for the first time.
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