Premium
Dielectric relaxation in lead‐free perovskite Ba(Bi 1/2 Nb 1/2 )O 3
Author(s) -
Prasad K.,
Bhagat S.,
Nath K. Amar,
Choudhary S. N.,
Yadav K. L.
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200824354
Subject(s) - monoclinic crystal system , dielectric , perovskite (structure) , materials science , ceramic , relaxation (psychology) , phase transition , diffraction , analytical chemistry (journal) , phase (matter) , debye , debye model , crystallography , crystal structure , chemistry , condensed matter physics , optics , metallurgy , optoelectronics , physics , social psychology , organic chemistry , psychology , chromatography
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)