Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0254-0584(02)00046-9
Title: Ferroelectric lead scandium tantalate from mechanical activation of mixed oxides
Authors: Lim, J.
Xue, J.M. 
Wang, J. 
Keywords: Mechanical aviation
Mixed oxides
PST
Wolframite precursor
Issue Date: 28-Apr-2002
Source: Lim, J., Xue, J.M., Wang, J. (2002-04-28). Ferroelectric lead scandium tantalate from mechanical activation of mixed oxides. Materials Chemistry and Physics 75 (1-3) : 157-160. ScholarBank@NUS Repository. https://doi.org/10.1016/S0254-0584(02)00046-9
Abstract: Conventional mixed oxide preparation of lead scandium tantalate, PbSc0.5Ta0.5O3 (PST) powder, requires two calcinations steps, the first of which is to form a Wolframite precursor and the resulting PST phase is structurally long-range ordered. In this work, we report the synthesis of perovskite PST via a novel one-step mechanical activation route, which leads to a long-range disordered structure as verified by X-ray diffraction. Sintered PSTs from the mechanically activated powders also retain the long-range disordered perovskite structure up to 1250 °C, while > 95% theoretical density was achieved. They exhibit a spontaneous ferroelectric-relaxor transition at 15 °C with a maximum dielectric constant of ∼13,850 and dielectric loss of < 0.04. © 2002 Elsevier Science B.V. All rights reserved.
Source Title: Materials Chemistry and Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/107273
ISSN: 02540584
DOI: 10.1016/S0254-0584(02)00046-9
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

9
checked on Feb 22, 2018

WEB OF SCIENCETM
Citations

10
checked on Jan 22, 2018

Page view(s)

17
checked on Feb 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.