Thermal and microstructural analysis of the Y-Ba-Cu-O/Ag equilibrium around the critical composition YBa2Cu3Ox/Ag 35 mass%

G. A. Costa; P. Mele

doi:10.1023/A:1012462926678

Thermal and microstructural analysis of the Y-Ba-Cu-O/Ag equilibrium around the critical composition YBa₂Cu₃O_x/Ag 35 mass%

G. A. Costa, P. Mele

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

We studied the Y-Ba-Cu-O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa₂Cu₃O_x/Ag 35 mass%. We found a high thermal effect: the peritectic decomposition temperature of Y-123 phase is lowered from 1040 to 940°C. We demonstrate here that the nature of the phenomenon is not chemical. We explained it as the result of a mechanical segregation of Y-123 decomposition products from Y-123 phase, performed by silver.

Original language	English
Pages (from-to)	17-25
Number of pages	9
Journal	Journal of Thermal Analysis and Calorimetry
Volume	66
Issue number	1
DOIs	https://doi.org/10.1023/A:1012462926678
Publication status	Published - 2001 Dec 1
Externally published	Yes
Event	22nd Italian Congress on Calorimetry Thermal Analysis and Chemical Thermodynamics (AICAT-GICAT Meeting 2000) - Camogli, Italy Duration: 2001 Dec 15 → 2001 Dec 31

Keywords

Mechanical segregation
Silver
Superconductor
Y-Ba-Cu-O equilibrium diagram

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry

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abstract = "We studied the Y-Ba-Cu-O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa2Cu3Ox/Ag 35 mass%. We found a high thermal effect: the peritectic decomposition temperature of Y-123 phase is lowered from 1040 to 940°C. We demonstrate here that the nature of the phenomenon is not chemical. We explained it as the result of a mechanical segregation of Y-123 decomposition products from Y-123 phase, performed by silver.",

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AU - Mele, P.

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N2 - We studied the Y-Ba-Cu-O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa2Cu3Ox/Ag 35 mass%. We found a high thermal effect: the peritectic decomposition temperature of Y-123 phase is lowered from 1040 to 940°C. We demonstrate here that the nature of the phenomenon is not chemical. We explained it as the result of a mechanical segregation of Y-123 decomposition products from Y-123 phase, performed by silver.

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