Influence of Zn doping on the thermal expansion of the high Tc superconductor Y1Ba2Cu3Oy

Research output: Contribution to journalArticle

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Abstract

Thermal expansion measurements have been carried out for the Zn-substituted compounds Y1 Ba2 (Cu1-xZn x)3Oy (0 ≤ x ≤ 4%) with a high-resolution dilatometer using the three terminal capacitance technique. The present setup is sensitive enough to detect changes in a of about 10 -8 K-1. Results indicate that the jump δα in the coefficient of linear thermal expansion decreases with an increase in Zn content. For x = 1 %, δα decreases by a factor of about five whereas the oxygen content and transition temperature do not change appreciably. There is strong evidence that the temperature dependences of α for compounds with high Zn concentration depend on the conditions of sample growth.

Original languageEnglish
Pages (from-to)1439-1445
Number of pages7
JournalJournal of Physics Condensed Matter
Volume16
Issue number8
DOIs
Publication statusPublished - 03-03-2004

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Superconducting materials
Thermal expansion
thermal expansion
Doping (additives)
extensometers
Dilatometers
Superconducting transition temperature
Capacitance
capacitance
transition temperature
Oxygen
temperature dependence
high resolution
oxygen
coefficients
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Influence of Zn doping on the thermal expansion of the high Tc superconductor Y1Ba2Cu3Oy",
abstract = "Thermal expansion measurements have been carried out for the Zn-substituted compounds Y1 Ba2 (Cu1-xZn x)3Oy (0 ≤ x ≤ 4{\%}) with a high-resolution dilatometer using the three terminal capacitance technique. The present setup is sensitive enough to detect changes in a of about 10 -8 K-1. Results indicate that the jump δα in the coefficient of linear thermal expansion decreases with an increase in Zn content. For x = 1 {\%}, δα decreases by a factor of about five whereas the oxygen content and transition temperature do not change appreciably. There is strong evidence that the temperature dependences of α for compounds with high Zn concentration depend on the conditions of sample growth.",
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Influence of Zn doping on the thermal expansion of the high Tc superconductor Y1Ba2Cu3Oy. / Rao, Ashok.

In: Journal of Physics Condensed Matter, Vol. 16, No. 8, 03.03.2004, p. 1439-1445.

Research output: Contribution to journalArticle

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T1 - Influence of Zn doping on the thermal expansion of the high Tc superconductor Y1Ba2Cu3Oy

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AB - Thermal expansion measurements have been carried out for the Zn-substituted compounds Y1 Ba2 (Cu1-xZn x)3Oy (0 ≤ x ≤ 4%) with a high-resolution dilatometer using the three terminal capacitance technique. The present setup is sensitive enough to detect changes in a of about 10 -8 K-1. Results indicate that the jump δα in the coefficient of linear thermal expansion decreases with an increase in Zn content. For x = 1 %, δα decreases by a factor of about five whereas the oxygen content and transition temperature do not change appreciably. There is strong evidence that the temperature dependences of α for compounds with high Zn concentration depend on the conditions of sample growth.

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