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STUDY OF BULK MODULUS IN ABO3 PEROVSKITES

Kanta

Research Scholar, Deptt. Of Physics, Singhania University, Rajasthan.

Dheeraj Kumar

Research Scholar, Deptt. Of Chemistry, Singhania University, Rajasthan.

19-24

Vol: 4, Issue: 4, 2014

Receiving Date: 2014-08-15 Acceptance Date:

2014-09-12

Publication Date:

2014-10-16

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Abstract

The term ‘perovskite’ is used to denote a category of inorganic crystalline solids with the general formula ABO3, where A and B are cations and O is an anion. A large number of perovskite-type oxides have been studied because of their interesting properties, including superconductivity, insulator–metal transition, ionic conduction characteristics, dielectric properties and ferroelectricity. Additionally, they have received great attention as high temperature proton conductors with the possibility of applications in fuel cells or hydrogen sensors and these solids are currently gaining considerable importance in the field of electrical ceramics, refractories, geophysics, astrophysics, particle accelerators, fission, fusion reactors, heterogeneous catalysis etc . MgSiO3 is the most abundant mineral at great depths of Earth. The dynamical properties of MgSiO3 perovskite were studied very extensively. MgSiO3 perovskite is generally assumed to be abundant and stable phases existing in the lower mantle, but there are significant disagreements among the available experimental measurements on the melting of MgSiO3 perovskite determined by different investigators.

Keywords: superconductivity, insulator–metal transition, ionic conduction characteristics, dielectric properties and ferroelectricity.

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