Paper Title:
Dielectric Properties and Diffuse Phase Transition of Sol-Gel Derived 0.94(Bi0.5Na0.5)TiO3-0.06BaTiO3 Ceramics
  Abstract

The 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (abbreviated to BNT-BT) powder and ceramic was synthesized by sol-gel process. The phase structure and dielectric properties of the ceramics were investigated. The ceramic was sintering at 1000-1100 degree C for 2-4 h in air atmosphere, and the X-ray diffraction (XRD) results revealed that the samples was pure perovskite-type phase. The Curite temperature of BNT-BT ceramics was high up to 348 degree C. The temperature dependence of dielectric permittivity and loss revealed there were two phase transitions, which were from ferroelectric (tetragonal) to anti-ferroelectric (rhombohedral) and anti-ferroelectric to paraelectric (cubic) in BNT-BT ceramics. Diffuse phase transitions were observed in BNT and BNT-BT ceramics and the Curie-Weiss Exponent (CWE) were nearly 2.

  Info
Periodical
Advanced Materials Research (Volumes 311-313)
Chapter
Environmental Friendly Materials
Edited by
Zhongning Guo
Pages
1481-1484
DOI
10.4028/www.scientific.net/AMR.311-313.1481
Citation
X. F. Cheng, X. G. Tang, S. G. Ju, Y. P. Jiang, Q. X. Liu, "Dielectric Properties and Diffuse Phase Transition of Sol-Gel Derived 0.94(Bi0.5Na0.5)TiO3-0.06BaTiO3 Ceramics", Advanced Materials Research, Vols. 311-313, pp. 1481-1484, 2011
Online since
August 2011
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Price
$32.00
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