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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 CodeG01N25/18
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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