Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8362
Title: Structure, ferroelectric, piezoelectric and ferromagnetic properties of BiFeO3-Ba0.85Ca0.15Ti0.90Zr 0.10O3 lead-free multiferroic ceramics
Authors: Lin, D
Kwok, KW 
Chan, HLW 
Keywords: Ferroelectric
Ferromagnetic
Lead-free
Multiferroic
Issue Date: 2014
Publisher: Pergamon Press
Source: Ceramics international, 2014, v. 40, no. 1 PART B, p. 1335-1339 How to cite?
Journal: Ceramics international 
Abstract: Lead-free (1-x)BiFeO3-xBa0.85Ca0.15Ti 0.90Zr0.10O3+1 mol% MnO2 multiferroic ceramics have been prepared by a conventional ceramic fabrication technique and their structure, ferroelectric, piezoelectric and ferromagnetic properties have been studied. Ba0.85Ca0.15(Ti 0.9Zr0.1)O3 diffuses into the BiFeO3 lattices to form a new solid solution with a perovskite structure. The ceramics with x=0.15-0.275 possess a rhombohedral phase. As x increases, the ceramic transforms into a pseudo-cubic phase. A morphotropic phase boundary separating the two phases is formed at 0.275<x<0.30. A diffusive ferroelectric- paraelectric phase transition is induced in the ceramics with high concentrations of Ba0.85Ca0.15(Ti0.9Zr 0.1)O3. The ferroelectric and piezoelectric properties of the ceramics are improved. For the ceramic with x=0.275, the piezoelectric properties become optimum: d33=106 pC/N and kp=29.7%. The ceramics also exhibit weak magnetic properties.
URI: http://hdl.handle.net/10397/8362
ISSN: 0272-8842
EISSN: 1873-3956
DOI: 10.1016/j.ceramint.2013.07.014
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