Rao, Ashok and Das, Anirban and Chakraborty, Tirthankar and Gahtori, Bhasker and Agarwal, S. K. and Sarkar, Chandan Kumar and Sivakumar, K. M. and Wu, K. K. and Kuo, Y. K. (2008) Electrical and thermal transport properties of EuBa2(Cu1-xMnx)(3)O7-delta. Journal Of Physics: Condensed Matter, 20 (48). 485212-1-485212-6. ISSN 0953-8984

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Abstract

In this communication, we present the measurements of electrical resistivity (rho), thermal conductivity (kappa), thermopower (S), and specific heat (C-P) on Mn doped compounds EuBa2(Cu1-xMnx)(3)O7-delta for 0 <= x <= 0.02. The transition temperature T-C and the upper critical field HC2(0) in this series of compounds are found to decrease quasi-linearly as the Mn concentration increases. All the currently investigated samples show a hump in thermal conductivity below their transition temperatures. Thermopower measurements exhibit an electron-like behaviour for pure samples; however, a hole-like behaviour is seen in all the doped samples. A small jump in specific heat is observed in the pure samples. It is seen that replacing 0.5% Cu by Mn has little effect on the transition temperature, but there is a nearly twofold suppression in the CP jump for this sample. These results demonstrate that the impurities are being incorporated as a whole and not as a cluster.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S IOP Publishing.
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	07 Jan 2014 09:14
Last Modified:	07 Jan 2014 09:14
URI:	http://npl.csircentral.net/id/eprint/1005

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