<abstract xmlns="http://www.w3.org/1999/xhtml">In this work the X-ray diffraction, scanning electron microscopy, Raman and dielectric studies of lead free perovskite (1 – x)Ba0.06(Na1/2Bi1/2)0.94TiO3–xNaNbO3 (0 ⩽ x ⩽ 1.0) ceramics, prepared using a standard solid state reaction method, were investigated. X-ray diffraction studies of all the ceramics suggested the formation of single phase with crystal structure transforming from rhombohedral-tetragonal to orthorhombic symmetry with the increase in NaNbO3 content. Raman spectra also confirmed the formation of solid solution without any new phase. Dielectric studies showed that the phase transition is of diffusive character and diffusivity parameter decreases with increasing NaNbO3 content. The compositional fluctuation was considered to be the main cause of diffusivity.</abstract>

In this work the X-ray diffraction, scanning electron microscopy, Raman and dielectric studies of lead free perovskite (1 – x)Ba0.06(Na1/2Bi1/2)0.94TiO3–xNaNbO3 (0 ⩽ x ⩽ 1.0) ceramics, prepared using a standard solid state reaction method, were investigated. X-ray diffraction studies of all the ceramics suggested the formation of single phase with crystal structure transforming from rhombohedral-tetragonal to orthorhombic symmetry with the increase in NaNbO3 content. Raman spectra also confirmed the formation of solid solution without any new phase. Dielectric studies showed that the phase transition is of diffusive character and diffusivity parameter decreases with increasing NaNbO3 content. The compositional fluctuation was considered to be the main cause of diffusivity.

Dielectric and Raman studies of Ba0.06(Na1/2Bi1/2)0.94TiO3–NaNbO3 ceramics

Department of Physics, St. Xavier’s College, Ranchi-834 001, India

National Physical Laboratory, New Delhi-110 012, India

University Department of Physics, Ranchi University, Ranchi-834 008, India

Department of Physics, S.M. College, Bhagalpur-812 001, India

Aryabhatta Centre for Nanoscience and Nanotechnology, Aryabhatta Knowledge University, Patna-800 001, India

University Department of Physics, T.M. Bhagalpur University, Bhagalpur 812 007, India

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Dielectric and Raman studies of Ba(NaBi)TiO–NaNbO ceramics

In this work the X-ray diffraction, scanning electron microscopy, Raman and dielectric studies of lead free perovskite (1 –...

Dielectric and Raman studies of Ba_0.06(Na_1/2Bi_1/2)_0.94TiO₃–NaNbO₃ ceramics

Article Category: Research Article

Publié en ligne: 18 juin 2016

Pages: 437 - 445

Reçu: 27 nov. 2015

Accepté: 28 janv. 2016

DOI: https://doi.org/10.1515/msp-2016-0041

© Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.