Preparation, characterization, conductivity and thermal expansion studies of Ca0.5SbMP3O12 (M = Al, Fe, Cr)

Nasicon type compounds of general formula Ca0.5SbMP3O12 (M = Al, Fe, Cr) are prepared by solid-state method. All the compounds crystallize in hexagonal lattice with \[ R \,\bar 3\,c \] space group. The IR spectra show characteristic PO4 vibrations. Conductivity studies indicate the presence of charg...

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Bibliographic Details
Published in:Journal of materials science 2007-05, Vol.42 (10), p.3613-3620
Main Authors: RAMBABU, G, KOTESWARA RAO, K, ANANTHARAMULU, N, RAGHAVENDER, M, PRASAD, G, PRASHANTH KUMAR, V, VISHNUVARDHAN REDDY, C, VITHAL, Muga
Format: Article
Language:English
Subjects:
Chemistry
Chromium
Crystal defects
Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...)
Exact sciences and technology
Hexagonal lattice
Infrared spectroscopy
Inorganic chemistry and origins of life
Iron
Materials science
Preparations and properties
Thermal expansion
Thermodynamic properties
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Summary:Nasicon type compounds of general formula Ca0.5SbMP3O12 (M = Al, Fe, Cr) are prepared by solid-state method. All the compounds crystallize in hexagonal lattice with \[ R \,\bar 3\,c \] space group. The IR spectra show characteristic PO4 vibrations. Conductivity studies indicate the presence of charged defects. The Cole-Cole plots of impedance are semicircles between 150 and 350 °C. The thermal expansion of these samples is studied in the temperature range 25–500 °C.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-0400-5