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Effect of A-site substitution on electrical conductivity and microstructure of YAlO3

Published online by Cambridge University Press:  03 July 2012

Ramya Hariharan  and
Prakash Gopalan
Ramya Hariharan
Affiliation:
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India
Prakash Gopalan*
Affiliation:
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India
*
a)Address all correspondence to this author. e-mail: pgopalan@iitb.ac.in
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Abstract

A systematic evaluation of the electrical conductivity of Sr-substituted YAlO3 system has been performed. A comparison between the Ca- and Sr-doped YAlO3 systems is reported. The samples have been synthesized by citrate gel route, and the electrical conductivity measurements have been conducted in air in the 300–800 °C temperature range. The influence of phase development of the compositions on the total conductivity has been investigated using the x-ray diffraction technique. Also, the effect of microstructure and composition of the phases evolved on the electrical conductivity has been analyzed using scanning electron microscopy and energy dispersive spectrum techniques.

Keywords

CeramicElectrical propertiesOxide
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 15: Focus Issue: Advanced Materials for Fuel Cells , 14 August 2012 , pp. 2017 - 2023
Copyright
Copyright © Materials Research Society 2012

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