Published June 24, 2015
| Version v1
Journal article
Global and local structural variations near the antiferroelectric regime in Na0.5Bi0.5TiO3
- 1. Department of Materials Science and Metallurgical Engineering, Indian Institute of Technology Hyderabad, ODF-Campus-502205 (India)
- 2. Advanced Functional Materials Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, ODF-Campus-502205 (India)
- 3. UGC-DAE CSR Mumbai Centre, BARC Campus, Mumbai - 400085 (India)
- 4. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai - 400085 (India)
Description
Rietveld refinement of neutron and x-ray diffraction data of Na0.5Bi0.5TiO3 shows R3c phase stabilization at room temperature. The intermediate antiferroelectric region between 180°C to 280°C exhibits phase coexistence i.e R3c + Pnma, along with decrease in octahedral tilt angle and increase in unit cell volume. The local structural changes observed from Raman scattering in the A-O, Ti-O and TiO6 phonon modes favor the global structural variation. A possible antiparallel cation displacement due to Pnma phase formation leads to the origin of antiferroelectric ordering in Na0.5Bi0.5TiO3
Additional details
Identifiers
- DOI
- 10.1063/1.4917605;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1665
- Journal Issue
- 1
- Journal Page Range
- vp.
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 59. DAE solid state physics symposium 2014
- Dates
- 16-20 Dec 2014
- Place
- Tamilnadu (India)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 47060267
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANTIFERROELECTRIC MATERIALS; BISMUTH COMPOUNDS; ORTHORHOMBIC LATTICES; PHONONS; RAMAN EFFECT; RAMAN SPECTROSCOPY; SODIUM COMPOUNDS; STABILIZATION; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TITANATES; TITANIUM OXIDES; TRIGONAL LATTICES; VARIATIONS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIELECTRIC MATERIALS; DIFFRACTION; LASER SPECTROSCOPY; MATERIALS; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; SCATTERING; SPECTROSCOPY; TEMPERATURE RANGE; THREE-DIMENSIONAL LATTICES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2015 AIP Publishing LLC