Powder X-ray diffraction, infrared and conductivity studies of AgSbMP3O12 (M = Al, Ga, Fe and Cr)
作者： G. Rambabu , N. Anantharamulu , K. Koteswara Rao , G. Prasad , M. Vithal
DOI: 10.1016/J.MATERRESBULL.2007.06.022
关键词: Analytical chemistry 、 Crystallography 、 Arrhenius equation 、 Chemistry 、 Space group 、 X-ray crystallography 、 Type (model theory) 、 Infrared spectroscopy 、 Absorption spectroscopy 、 Conductivity 、 Activation energy
摘要: New Nasicon type of compounds composition AgSbMP{sub 3}O{sub 12} (M = Al, Ga, Fe and Cr) are synthesized by solid-state method. All the crystallize in hexagonal lattice with space group R3-barc. The infrared spectra these show characteristic bands due to PO{sub 4} group. frequency independent conductivity shows Arrhenius behavior activation energy for conduction is range 0.40-0.55 eV. Frequency ({sigma}{sub dc}) studies dependent ac}) impedance measurements correlate well. Cole-Cole plots do not any spikes on lower side indicating negligible electrode effects. energies obtained from log {sigma}{sub dc}T versus 1/T, ac}(0) 1/T {tau} approximately same. peak width at half height electric modulus (M'') plot {approx}1.24 decades all samples, which close 1.14 observed Debye solid. experimental that M'' (max) C{sub 0}/2C nature samples.
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