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Title: Jahn-Teller assisted polaron hopping and associated dielectric response of PrFe0.5Mn0.5O2.95
Authors: Ganeshraj, C.
Kavita, S.
Mahendiran, R. 
Sharma, N.
Das, A.
Santhosh, P.N.
Issue Date: 9-Sep-2013
Citation: Ganeshraj, C., Kavita, S., Mahendiran, R., Sharma, N., Das, A., Santhosh, P.N. (2013-09-09). Jahn-Teller assisted polaron hopping and associated dielectric response of PrFe0.5Mn0.5O2.95. Applied Physics Letters 103 (11) : -. ScholarBank@NUS Repository.
Abstract: The canted G-type antiferromagnet PrFe0.5Mn0.5O 2.95 shows an enhanced Jahn-Teller (JT) distortion below 150 K (T*). The resistivity of the grains can be described by variable range hopping between the localized states, and there is a dominant grain boundary contribution to dc resistivity, below T*. Above T*, the total dc resistivity follows small polaron hopping (SPH) conduction. A giant dielectric response is observed, and it can be ascribed to Maxwell-Wagner polarization and SPH mechanism. Despite the low concentration of JT active Mn3+ ions, our result indicates an important role of JT effect on physical properties of PrFe0.5Mn0.5O2.95. © 2013 AIP Publishing LLC.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.4821190
Appears in Collections:Staff Publications

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