Abstract
The elastic and thermal properties of perovskite manganites La1−xSrxMnO3 (x = 0.165, 0.185, 0.20, 0.40, 0.70, 0.80, 0.90, 1.0) have been studied as a function of temperature (1K≤T≤300K) by means of Atoms in Molecules (AIM) theory and a Modified Rigid Ion Model (MRIM) respectively. The specific heat values (Cv) and the Debye temperatures obtained by us from the lattice contributions are in reasonably good agreement with the available experimental data for some concentrations (x) of La1−xSrxMnO3. In addition, the results on the Bulk Modulus (BT), cohesive energy (ϕ), molecular force constant (f), Reststrahlen frequency (vo) and Grüneisen parameter (γ) are also analysed.
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