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Title: Phase evolutions and electrical properties in BaTiO<inf>3</inf>-BaFe<inf>0.5</inf>Nb<inf>0.5</inf>O<inf>3</inf>ceramics
Authors: U. Intatha
S. Eitssayeam
K. Pengpat
G. Rujijanagul
T. Tunkasiri
Keywords: Physics and Astronomy
Issue Date: 25-Nov-2009
Abstract: In this work, BaFe0.5Nb0.5O3(BFN) was added to BaTiO3(BT) to form the solid solution. The investigation of phase evolution, physical properties and electrical properties of the binary system (l-x)BT-xBFN where x = 0, 0.2, 0.4 and 0.6 was carried out. The BT and BFN powders were prepared separately using a calcination technique with optimum calcinations temperature for producing both BT and BFN powders. XRD results revealed that the BT-BFN ceramics with BFN content of x less than 0.4 contain the ferroelectric tetragonal perovskite phase whereas the composition with BFN content of x = 0.6 changes symmety to the cubic phase. From the evidences including phases, microstructures and ferroelectric and dielectric data of the BT-BFN ceramics, it is inferred that the morphotropic phase boundary occurs around the composition ox = 0.4. © 2009 American Institute of Physics.
ISSN: 15517616
Appears in Collections:CMUL: Journal Articles

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