Dielectric relaxation in lead-free perovskite Ba(Bi1/2Nb1/2)O3

✍ Scribed by Prasad, K. ;Bhagat, S. ;Nath, K. Amar ;Choudhary, S. N. ;Yadav, K. L.

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 622 KB
• Volume: 206
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200824354

✦ Synopsis

Abstract

A new lead‐free perovskite ceramic Ba(Bi~1/2~Nb~1/2~)O~3~ was prepared by a conventional ceramic technique at 1185 °C in oxygen atmosphere. X‐ray diffraction analysis of the compound indicated the formation of a single‐phase monoclinic structure. Dielectric study revealed a diffuse phase transition at 340 °C. Cole–Cole analyses suggested the dielectric relaxation to be of non‐Debye type. Electric modulus studies supported the hopping type of conduction in Ba(Bi~1/2~Nb~1/2~)O~3~. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)