Influence of BLT content on phase structure and electrical properties of (1-x)BT-xBLT ceramic

Authors

  • Navavan Thongmee Program of Physics, Faculty of science and technology, Pibulsongkram Rajabhat University
  • Rattiphorn Sumang Faculty of Science and Technology, Pibulsongkram Rajabhat University
  • Soodkhet Pojprapai School of ceramic engineering, Institute of Engineering, Suranaree Univeristy of Technology
  • T Klaytae Faculty of Science and Technology, Pibulsongkram Rajabhat University

Keywords:

BT-BLT, Ferroelectric properties, Dielectric properties, Hysteresis loop

Abstract

(1-x)BaTiO3-x(Bi3.25La0.75)Ti3O12; (1-x)BT-xBLT ceramics with x = 0-0.20 wt.% were prepared by a solid-state reaction method. The BaTiO3 (BT) and (Bi3.25La0.75)Ti3O12 (BLT) powders were, respectively, calcined at 1100°C and 750°C for 4 h. The (1-x)BT-xBLT samples were sintered between 1250°C and 1350°C. The structure exhibited a transformation from tetragonal to orthorhombic with increasing in BLT contents. The average grain size increased with increasing BLT contents. The maximum density and relative density about 6.19 ± 0.07 g/cm3and 99.3% were obtained for the composition of 0.95BT-0.05BLT. The Curie temperature (Tc) continuously decreased with increase in BLT contents. The dielectric constant showed a broad peak and pronounced dependence on frequency, which implied an existence of the relaxor behavior. The hysteresis parameters such as saturation polarization (Ps~18.06 mC/cm2), remanent polarization (Pr~12.64 mC/cm2) and coercive field (Ec~11.09 kV/cm) can be improved when BLT content is increased to 0.05 wt.%.

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Published

2018-06-27

How to Cite

[1]
N. Thongmee, R. Sumang, S. . Pojprapai, and T. Klaytae, “Influence of BLT content on phase structure and electrical properties of (1-x)BT-xBLT ceramic”, J Met Mater Miner, vol. 28, no. 1, Jun. 2018.

Issue

Vol. 28 No. 1 (2018)

Section

Original Research Articles

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