A First Principle and Experimental study of Double Perovskite

Ashwani Kumar¹

1. Department of Physics, National Defence Academy, Khadakwasla, Pune - 411 023, MH, India.

Section:Research Paper, Product Type: Journal-Paper
Vol.5 , Issue.1 , pp.1-7, Mar-2018

CrossRef-DOI:   https://doi.org/10.26438/jpcm/v5i1.17

Online published on Mar 30, 2018

Copyright © Ashwani Kumar . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Indium Zinc Titanate, In2(ZnTi)O6 (IZT), a double perovskite is synthesized. The field dependence of the conductivity and the dielectric response of the sample are measured in a wide frequency and temperature. It is observed that, the dielectric constant decreases with the increase of frequency. The frequency dependence of the loss peak is found to obey an Arrhenius law with activation energy of 0.73 eV. An analysis of loss factor with frequency is performed by using the scaling behaviour of the dielectric loss spectra. The complex impedance plot of the sample confirms that the polarization mechanism in IZT corresponds to bulk effect of semiconductor IZT particles. The relaxation mechanism is discussed in the framework of impedance and modulus formalism. The full potential linearized augmented plane wave method is employed to study the ground state properties.

Key-Words / Index Term :
Pseudopotential; Density Functional theory (DFT), Electronic density of states and band structure, Dielectrics

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