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THERMAL-EXPANSION OF ORTHORHOMBIC AND TETRAGONAL PHASES OF THE HIGH T(C) SUPERCONDUCTORS RE1BA2CU3OY (RE = Y, GD, DY)

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Title THERMAL-EXPANSION OF ORTHORHOMBIC AND TETRAGONAL PHASES OF THE HIGH T(C) SUPERCONDUCTORS RE1BA2CU3OY (RE = Y, GD, DY)
 
Creator PRAKASH, OM
RAO, A
PRAKASH, O
DHEER, PN
 
Subject tc
yba2cu3o7
magnetostriction
dependence
heat
thermal expansion
high temperature superconductors
discontinuity in alpha
growth conditions
iodometric titration
 
Description Measurements of the coefficient of linear thermal expansion alpha have been carried out for the orthorhombic and tetragonal phases of RE1Ba2Cu3Oy(RE = Y, Gd, Dy) compounds using a high resolution capacitance dilatometer in the temperature range 77-300 K. All the superconducting samples exhibit a jump DELTAalpha at their respective transition temperatures, T(c). Evidences of, sample-to-sample variation in alpha values and dependence of DELTAalpha on the sample preparation conditions, have been obtained. The non-superconducting samples, in general, exhibit lower values of alpha possibly because of lowering of oxygen content.
 
Publisher INDIAN ACADEMY SCIENCES
 
Date 2011-08-02T09:02:27Z
2011-12-26T12:53:48Z
2011-12-27T05:40:50Z
2011-08-02T09:02:27Z
2011-12-26T12:53:48Z
2011-12-27T05:40:50Z
1993
 
Type Article
 
Identifier PRAMANA-JOURNAL OF PHYSICS, 41(5), 421-428
0304-4289
http://dx.doi.org/10.1007/BF02847448
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8736
http://hdl.handle.net/10054/8736
 
Language en