Crystal structure and electrical properties of CaNaBi2Nb3O12 ceramics
Data(s) |
01/04/2011
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Resumo |
Monophasic CaNaBi2Nb3O12 powders were synthesized via the conventional solid-state reaction route. Rietveld refinement of the X-ray powder diffraction (XRD) data and selected area electron diffraction (SAED) studies confirmed the phase to be a three-layer Aurivillius oxide associated with an orthorhombic B2cb space group. The dielectric properties of the ceramics have been studied in the 300-800 K temperature range at various frequencies (1 kHz to 1 MHz). A dielectric anomaly was observed at 676 K for all the frequencies corresponding to the ferroelectric to paraelectric phase transition as it was also corroborated by the high temperature X-ray diffraction studies. The incidence of the polarization-electric field (P vs. E) hysteresis loop demonstrated CaNaBi2Nb3O12 to be ferroelectric. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/36010/2/Crystal.pdf Kumar, Sunil and Varma, KBR (2011) Crystal structure and electrical properties of CaNaBi2Nb3O12 ceramics. In: Journal of Materials Science , 46 (8). pp. 2606-2610. |
Publicador |
Springer |
Relação |
http://www.springerlink.com/content/y875v452l2221383/ http://eprints.iisc.ernet.in/36010/ |
Palavras-Chave | #Materials Research Centre |
Tipo |
Journal Article PeerReviewed |