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Title: | Ion transport study of mechanically-milled amorphous AgI-Ag₂O-V₂O₅ fast ionic conductors |
Authors: | Kumar, Parveen Tiwari, J P Shahi, K |
Keywords: | Mechanically-milled;Jonscher power law;Fast ionic conductors |
Issue Date: | Jan-2007 |
Publisher: | CSIR |
IPC Code: | G01R |
Abstract: | The structural and electrical characterizations of mechanically-milled (MM) amorphous fast ionic conductors (a-FICs), viz. xAgI (100-x)[0.67 Ag₂O-0.33V₂O₅] ( x = 40, 50, 55 and 70 ) have been reported. The amorphisation is restricted only to the compositions which are well within the glass forming region and all samples are found to be highly agglomerated and X-ray amorphous in nature. The frequency dependent ac conductivity , , of the amorphous samples investigated in the frequency range 5Hz -13 MHz and temperature range 100- 350 K shows a dc conductivity regime at low frequencies and a dispersive regime at higher frequencies. The spectra can be described by the Jonscher power law (JPL), However, the values σ dc(T) and A(T) both show two distinct Arrhenius regions and n ( < 1 ) is found to be temperature dependent, i.e., decreasing with increasing temperature. |
Page(s): | 44-47 |
URI: | http://hdl.handle.net/123456789/2272 |
ISSN: | 0019-5596 |
Appears in Collections: | IJPAP Vol.45(01) [January 2007] |
Files in This Item:
File | Description | Size | Format | |
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IJPAP 45(1) 44-47.pdf | 488.39 kB | Adobe PDF | View/Open |
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