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Title: Phase development and dielectric responses in PMN-BNT ceramics
Authors: N. Jaitanong
W. C. Vittayakorn
A. Chaipanich
Keywords: Chemical Engineering
Materials Science
Issue Date: 1-May-2010
Abstract: (1 - x)Pb(Mg1/3Nb2/3)O3-x(Bi0.5Na0.5)TiO3 ceramics were prepared by the conventional mixed-oxide method. All compositions show complete perovskite solid solutions and the structure to change from cubic to rhombohedral at x = 0.5. The dielectric constant and dielectric loss tangent were measured as a function of both temperature and frequency. The results indicated a relaxor ferroelectric behavior for all ceramics. The temperature at maximum of the dielectric constant of PMN-BNT ceramics were seen to increase with increasing BNT content. Moreover, the broadest dielectric peak occurs at x = 0.9, which leads to a morphotropic phase boundary in this system. © 2010 Elsevier Ltd and Techna Group S.r.l.
ISSN: 02728842
Appears in Collections:CMUL: Journal Articles

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