Thermal expansion of orthorhombic and tetragonal phases of the high T c superconductors RE1Ba2Cu3O y (RE=Y, Gd, Dy)

O. M. Prakash, Ashok Rao, O. Prakash, P. N. Dheer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Measurements of the coefficient of linear thermal expansion α have been carried out for the orthorhombic and tetragonal phases of RE1Ba2Cu3O y (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 Δα at their respective transition temperatures, T c. Evidences of, sample-to-sample variation in α values and dependence of Δα on the sample preparation conditions, have been obtained. The non-superconducting samples, in general, exhibit lower values of α possibly because of lowering of oxygen content.

Original languageEnglish
Pages (from-to)421-428
Number of pages8
JournalPramana
Volume41
Issue number5
DOIs
Publication statusPublished - 01-11-1993

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thermal expansion
extensometers
capacitance
transition temperature
preparation
high resolution
oxygen
coefficients
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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Thermal expansion of orthorhombic and tetragonal phases of the high T c superconductors RE1Ba2Cu3O y (RE=Y, Gd, Dy). / Prakash, O. M.; Rao, Ashok; Prakash, O.; Dheer, P. N.

In: Pramana, Vol. 41, No. 5, 01.11.1993, p. 421-428.

Research output: Contribution to journalArticle

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T1 - Thermal expansion of orthorhombic and tetragonal phases of the high T c superconductors RE1Ba2Cu3O y (RE=Y, Gd, Dy)

AU - Prakash, O. M.

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AU - Prakash, O.

AU - Dheer, P. N.

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AB - Measurements of the coefficient of linear thermal expansion α have been carried out for the orthorhombic and tetragonal phases of RE1Ba2Cu3O y (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 Δα at their respective transition temperatures, T c. Evidences of, sample-to-sample variation in α values and dependence of Δα on the sample preparation conditions, have been obtained. The non-superconducting samples, in general, exhibit lower values of α possibly because of lowering of oxygen content.

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