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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(09) [September 2006] >
| Title: | EPR probes ion dynamics of superionic conductors |
| Authors: | Sunandana, C S
Mohan, D Bharathi |
| Keywords: | Superionic conductors
Electron paramagnetic resonance
Structural phase transitions |
| Issue Date: | Sep-2006 |
| Publisher: | CSIR |
| IPC Code: | G01N25/18 |
| Abstract: | Superionic
conductors possess large concentrations of monovalent mobile ions such as Ag+
in AgI and Li+ in LiClO4:PEG that travel through
diffusion even larger number of defect sites leading to ionic conductivities of
the order of 1S/cm around ambient temperature often through structural phase
transitions. Any mobile ion complex that is part of a network or unit cell
becoming paramagnetic through electron/hole capture, can serve as a probe for
ion dynamics and phase transitions. This paper identifies the basic issues of
superionic conductors from EPR standpoint and demonstrates through five case
studies the power of the technique to investigate conduction mechanisms in
terms of changes in structure and dynamics around the probe. |
| Page(s): | 637-643 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(09) [September 2006]
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