Abstract
We investigated the effect of silver, Ag(In) alloy and Y2BaCuO5 (the so-called Y-211 green phase) on melt-textured samples of YBa2Cu3O7-δ (Y-123) phase in order to check whether better grain growth and alignment were possible. We demonstrate that the addition of silver to Y-123 always led to an enhanced texture. The typical microstructure of the composite Y-123 plus Y-211 (that is believed essential for high critical currents in these high Tc superconductors) was not disturbed by addition of silver up to 7.5 wt% while higher concentrations of metal led to a degradation of the texture. Differential thermal analysis and thermogravimetric analysis were used to investigate the influence of silver and Ag(In) alloy on the Y-Ba-Cu-O equilibria around the Y-123 phase. We found a very unexpected thermal behaviour, similar to eutectic equilibrium, when the silver concentration was increased to 35 wt%. We believe that this effect was essentially due to the increasingly higher concentration of silver that could react with the impurities present in the melt.
| Original language | English |
|---|---|
| Pages (from-to) | 1113-1125 |
| Number of pages | 13 |
| Journal | Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties |
| Volume | 80 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2000 Jan 1 |
| Externally published | Yes |
| Event | International Workshop on Semiconducting and Superconducting Materials - Torino, Italy Duration: 1999 Feb 1 → 1999 Feb 1 |
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ASJC Scopus subject areas
- Chemical Engineering(all)
- Physics and Astronomy(all)
Cite this
The influence of silver and Ag(In) alloy on Y-Ba-Cu-O equilibria around the YBa2Cu3O7-δ superconducting phase. / Costa, G. A.; Franceschi, E. A.; Mele, Paolo.
In: Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties, Vol. 80, No. 5, 01.01.2000, p. 1113-1125.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - The influence of silver and Ag(In) alloy on Y-Ba-Cu-O equilibria around the YBa2Cu3O7-δ superconducting phase
AU - Costa, G. A.
AU - Franceschi, E. A.
AU - Mele, Paolo
PY - 2000/1/1
Y1 - 2000/1/1
N2 - We investigated the effect of silver, Ag(In) alloy and Y2BaCuO5 (the so-called Y-211 green phase) on melt-textured samples of YBa2Cu3O7-δ (Y-123) phase in order to check whether better grain growth and alignment were possible. We demonstrate that the addition of silver to Y-123 always led to an enhanced texture. The typical microstructure of the composite Y-123 plus Y-211 (that is believed essential for high critical currents in these high Tc superconductors) was not disturbed by addition of silver up to 7.5 wt% while higher concentrations of metal led to a degradation of the texture. Differential thermal analysis and thermogravimetric analysis were used to investigate the influence of silver and Ag(In) alloy on the Y-Ba-Cu-O equilibria around the Y-123 phase. We found a very unexpected thermal behaviour, similar to eutectic equilibrium, when the silver concentration was increased to 35 wt%. We believe that this effect was essentially due to the increasingly higher concentration of silver that could react with the impurities present in the melt.
AB - We investigated the effect of silver, Ag(In) alloy and Y2BaCuO5 (the so-called Y-211 green phase) on melt-textured samples of YBa2Cu3O7-δ (Y-123) phase in order to check whether better grain growth and alignment were possible. We demonstrate that the addition of silver to Y-123 always led to an enhanced texture. The typical microstructure of the composite Y-123 plus Y-211 (that is believed essential for high critical currents in these high Tc superconductors) was not disturbed by addition of silver up to 7.5 wt% while higher concentrations of metal led to a degradation of the texture. Differential thermal analysis and thermogravimetric analysis were used to investigate the influence of silver and Ag(In) alloy on the Y-Ba-Cu-O equilibria around the Y-123 phase. We found a very unexpected thermal behaviour, similar to eutectic equilibrium, when the silver concentration was increased to 35 wt%. We believe that this effect was essentially due to the increasingly higher concentration of silver that could react with the impurities present in the melt.
UR - http://www.scopus.com/inward/record.url?scp=0034191587&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034191587&partnerID=8YFLogxK
U2 - 10.1080/01418630008221978
DO - 10.1080/01418630008221978
M3 - Conference article
AN - SCOPUS:0034191587
VL - 80
SP - 1113
EP - 1125
JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
SN - 1364-2812
IS - 5
ER -