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|Title: ||THERMAL-EXPANSION OF ORTHORHOMBIC AND TETRAGONAL PHASES OF THE HIGH T(C) SUPERCONDUCTORS RE1BA2CU3OY (RE = Y, GD, DY)|
|Authors: ||PRAKASH, OM|
|Issue Date: ||1993|
|Publisher: ||INDIAN ACADEMY SCIENCES|
|Citation: ||PRAMANA-JOURNAL OF PHYSICS, 41(5), 421-428|
|Abstract: ||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.|
|Appears in Collections:||Article|
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