Ghosh, Barnali and Bhattacharya, Dipten and Raychaudhuri, A K and Arumugam, S (2009) Frequency dependence of dielectric anomaly around Neel temperature in bilayer manganite Pr(Sr(0.1)Ca(0.9))(2)Mn(2)O(7). Journal of Applied Physics, 105 (12). Article No.-123914. ISSN 0021-8979

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Abstract

The anomaly in dielectric constant versus temperature plot, around the Neel temperature T(N) (similar to 150 K), is found to be frequency dependent in a single crystal of bilayer manganite Pr(Sr(0.1)Ca(0.9))(2)Mn(2)O(7). The anomaly in the permittivity (epsilon'parallel to c) occurs at a temperature T(f) which moves within a temperature window (Delta T(f)) of similar to 40 K around T(N) for a frequency range of 50 kHz-5 MHz. The capacitive component C(p) of the dielectric response exhibits a clear yet broad feature around T(N) which establishes the intrinsic capacitive nature of the anomaly. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3153124]

Item Type:	Article
Subjects:	Electronics
Divisions:	Sensor and Actuator
Depositing User:	Bidhan Chaudhuri
Date Deposited:	27 Feb 2012 08:06
Last Modified:	27 Feb 2012 08:06
URI:	http://cgcri.csircentral.net/id/eprint/1021

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