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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Veröffentlicht in:	Journal of materials science 2007-05, Vol.42 (10), p.3613-3620
Hauptverfasser:	RAMBABU, G, KOTESWARA RAO, K, ANANTHARAMULU, N, RAGHAVENDER, M, PRASAD, G, PRASHANTH KUMAR, V, VISHNUVARDHAN REDDY, C, VITHAL, Muga
Format:	Artikel
Sprache:	eng
Schlagworte:	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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Zusammenfassung:	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