TITLE

Ferroelectric transition of Aurivillius compounds Bi5Ti3FeO15 and Bi6Ti3Fe2O18

AUTHOR(S)
Li, J.-B.; Huang, Y. P.; Rao, G. H.; Liu, G. Y.; Luo, J.; Chen, J. R.; Liang, J. K.
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/31/2010, Vol. 96 Issue 22, p222903
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Single-phase Bi5Ti3FeO15 and Bi6Ti3Fe2O18 ceramics have been synthesized by solid state reaction. The ferroelectric transition of the compounds was studied by differential scanning calorimetry, high-temperature x-ray diffraction, and temperature-dependent dielectric measurements. Two solid-state structural transitions were observed in both compounds, one is the orthorhombic↔tetragonal transition (ferroelectric transition) at 1021 K for Bi5Ti3FeO15 and 973 K for Bi6Ti3Fe2O18, and the other is accompanied by an abrupt lattice expansion of the tetragonal phase at about 1110 K for Bi5Ti3FeO15 and about 1090 K for Bi6Ti3Fe2O18.
ACCESSION #
51227037

 

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