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IJPAP Vol.45 [2007] >
IJPAP Vol.45(01) [January 2007] >
| 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 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.45(01) [January 2007]
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