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Please use this identifier to cite or link to this item: https://libjncir.jncasr.ac.in/xmlui/handle/10572/878
Title: Dielectric properties, thermal decomposition and related aspects of BiAlO3
Authors: Mangalam, R V K
Bhat, S V
Iyo, A
Tanaka, Y
Sundaresan, A
Rao, C N R
Keywords: high-pressure synthesis
dielectric properties
ferroelectricity
Raman scattering
High-Pressure Synthesis
Lead-Free
Magnetic-Properties
Crystal-Structure
Ferroelectricity
Bimno3
Bicro3
Issue Date: 2008
Publisher: Pergamon-Elsevier Science Ltd
Citation: Solid State Communications 146(11-12), 435-437 (2008)
Abstract: BiAlO3, prepared under high-pressure and high-temperature conditions has a rhombohechal perovskite structure (R3c with a = 5.3747(4) angstrom and c = 13.391 (1) angstrom) and decomposes around 550 degrees C to form the intermediate Bi2Al4O9 phase along with the Bi26-xAlxO40-y and Al2O3. Above 580 degrees C, the intermediate phase changes into the Bi26-xAlxO40-y. Dielectric measurements show an anomaly at the decomposition temperature and hysteresis at room temperature with a maximum polarization of similar to 16 mu C/cm(2). Raman scattering measurements suggest softening of optical phonon modes, and are consistent with the occurrence of thermal decomposition of the rhombohedral phase to form the thermodynamically stable phase. (C) 2008 Elsevier Ltd. All rights reserved.
Description: Restricted Access
URI: https://libjncir.jncasr.ac.in/xmlui/10572/878
Other Identifiers: 0038-1098
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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