Study of diffuse phase transition in BaTiO(3)-LaAlO(3)
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Study of diffuse phase transition in BaTiO(3)-LaAlO(3)
|
|
Creator |
GULWADE, D
GOPALAN, P |
|
Subject |
barium-titanate ceramics
dielectric-properties la batio3 al ferroelectrics x-ray diffraction dielectric response |
|
Description |
BaTiO(3)-LaAlO(3) systems of the type Ba(1-3x)La(2x)Ti(1-3x)Al(4x)O(3) and Ba(1-x)La(x)Ti(1-x)Al(x)O(3) have been investigated. The compositions in each of the systems have been prepared by solid-state reaction. The presence of a perovskite single phase is confirmed using X-ray diffraction (XRD). XRD data has been analyzed using a Rietveld refinement package and lattice parameters have been extracted. The microstructure of sintered pellets has been investigated using SEM. The compositions have been characterized by dielectric spectroscopy between room temperature and 250 degrees C. The resulting compounds exhibit a significant enhancement of the dielectric constant and diffuseness. The compositions with higher diffuseness have been characterized using high-temperature XRD to study the nature of the phase transition. On the basis of the high-temperature XRD data, core-shell structure is ruled out. (C) 2009
|
|
Publisher |
ELSEVIER SCIENCE SA
|
|
Date |
2011-07-28T20:50:40Z
2011-12-26T12:47:21Z 2011-12-27T05:41:15Z 2011-07-28T20:50:40Z 2011-12-26T12:47:21Z 2011-12-27T05:41:15Z 2009 |
|
Type |
Article
|
|
Identifier |
JOURNAL OF ALLOYS AND COMPOUNDS, 481(1-2), 316-319
0925-8388 http://dx.doi.org/10.1016/j.jallcom.2009.02.141 http://dspace.library.iitb.ac.in/xmlui/handle/10054/7495 http://hdl.handle.net/10054/7495 |
|
Language |
en
|
|