High-temperature dilatometric studies on the (RE)BaCuO system (RE = Y,Nd)

Kini, NS and Umarji, AM and Shivashankar, SA (2001) High-temperature dilatometric studies on the (RE)BaCuO system (RE = Y,Nd). In: Journal of Physics D: Applied Physics, 34 (9). pp. 1417-1420.

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Abstract

Thermal expansion measurements have been carried out using dilatometry on the (RE)BaCuO system in the temperature range 300–1100 K. The peak in the thermal expansion coefficient (α) at 890 K presages the high-temperature orthorhombic-to-tetragonal phase transition in $YBa_2Cu_3O_{7-\delta}$. The thermal expansion behaviours of $YBa_2Cu_3O_{7-\delta}$, $Y_2BaCuO_5$, $NdBa_2Cu_3O{7-\delta}$ and $Nd_4Ba_2Cu_2O_{10}$, which are the constituent phases of melt-processed high-$J_c$ superconducting ceramics, are compared. The relevance of dilatometric studies at high temperature to such multiphase ceramic bodies is discussed.

Item Type:	Journal Article
Publication:	Journal of Physics D: Applied Physics
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	14 Jun 2006
Last Modified:	19 Sep 2010 04:29
URI:	http://eprints.iisc.ac.in/id/eprint/7633

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