Paper Title:
Nanocrystalline W-Doped SrBi2Ta2O9 of Layered Perovskite Structure Derived from Mechanical Activation
  Abstract

To study the effects of doping the layered perovskite SrBi2Ta2O9 with an appropriate amount of tungsten, both undoped and W-doped SrBi2Ta2O9 (SBT) of nanocrystallinity were synthesized by mechanical activation of constituent oxides of strontium oxide, bismuth oxide, tantalum oxide and tungsten oxide at room temperature. A nanocrystalline single perovskite phase was observed in SrBi2(Ta1-xWx)2O9 with up to x=0.1. SrBi2(Ta0.9W0.1)2O9 shows a higher Curie temperature than that of undoped SBT, although it exhibits a very similar layered perovskite structure. The ferroelectric and impedance behaviors of SrBi2 (Ta0.9W0.1)2O9 were studied over a range of test temperatures and frequencies, in order to understand the effects of W-doping in SBT, given that W exhibits a similar ionic size to Ta but with a variable valence.

  Info
Edited by
M. Gupta and Christina Y.H. Lim
Pages
59-62
DOI
10.4028/www.scientific.net/JMNM.23.59
Citation
W.S. Toh, Z.H. Zhou, J.M. Xue, J. Wang, Z. H. Barber, J.E. Evetts, "Nanocrystalline W-Doped SrBi2Ta2O9 of Layered Perovskite Structure Derived from Mechanical Activation", Journal of Metastable and Nanocrystalline Materials, Vol. 23, pp. 59-62, 2005
Online since
January 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Athipong Ngamjarurojana, Supon Ananta, Rattikorn Yimnirun
Abstract:The structure and electrical properties of Al2O3-doped 0.2Pb(Zn1/3Nb2/3)O3-0.8Pb(Zr1/2Ti1/2)O3 ceramic, which is the morphotropic phase...
89
Authors: Atthakorn Thongtha, Theerachai Bongkarn
Abstract:The effect of sintering temperatures (1050-1200 °C) on the phase formation, microstructure and dielectric properties of a binary system...
1754
Authors: Chun Hong Mu, Ying Li Liu, Yuan Qiang Song, Huai Wu Zhang, Peng Liu
Abstract:CaCu3Ti4O12 presents colossal dielectric permittivity within a large temperature and frequency range, which...
321
Authors: Dong Ge Chen, Xin Gui Tang, Qiu Xiang Liu, Xiao Fang Cheng, Yan Zou
Abstract:Bismuth neodymium ferrite (Bi1-xNdxFeO3: BNFO; x=0, 0.025, 0.075, 0.125, 0.175)...
439
Authors: Rachanusorn Roongtao, Supagorn Rugmai, Wanwilai C. Vittayakorn
Abstract:The 0.98BaTiO3-0.02Ba (Mg1/3Nb2/3) O3 ceramics has been synthesized through a conventional...
58