Thermodynamic Properties of Ni-substituted LnCoO3 Perovskite

Rasna Thakur Rajesh K. Thakur, Shemim SS N.V.K. Prabhakar, Shalini Pradhan N.K. Gaur


With the objective of exploring the unknown thermodynamic properties of Ni-substituted LnCoO3 perovskite, we present here an investigation of the temperature-dependent (10K < T < 300K) specific heat of LnCo0.95Ni0.05O3 (Ln=Pr and Nd) family. We report here probably for the first time the specific heat along with other elastic and thermal properties of Ni doped perovskite cobaltate LnCoO3 (Ln=Pr and Nd). In addition, the results on the cohesive energy (f) in orthorhombic perovskite phase, molecular force constant (ƒ), Reststrahlen frequency (uo) and Gruneisen parameter (γ) are also presented.

Keywords: Specific heat, Bulk modulus, Perovskite cobaltate

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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