Abstract
The effect of silver (Ag) solubility on microstructure and superconducting properties of YBa2Cu3-xAgxO7-δ (0≤x≤0.5) superconductors has been evaluated. The solubility limit of Ag for copper sites in YBCO at ambient conditions (room temperature, atmospheric pressure) was evaluated to be x≅0.06. Analysis revealed the Ag content (x) of YBCO grains to be lower than the nominal Ag content (xn) used for fabrication, probably due to processing-related problems. Part of the Ag used for fabrication segregates on the YBCO grain boundaries. The segregated Ag particles are believed to pin YBCO grains, resulting in fine-grain microstructures. For low nominal Ag content, xnc) increased from 98 to 160 A/cm2 as a function of increasing Ag content. These improvements are believed to be due to the increased oxygen content and associated microstructural changes in the YBCO. For higher nominal Ag content, xn≳0.2, however, Jc decreased rapidly with the increasing Ag content due to the precipitation of nonsuperconducting phases.
| Original language | English |
|---|---|
| Pages (from-to) | 2351-2355 |
| Number of pages | 5 |
| Journal | Journal of Applied Physics |
| Volume | 71 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1992 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Effect of silver solubility on microstructure and superconducting properties of YBa2Cu3-xAgxO7-δ superconductors. / Joo, J.; Singh, J. P.; Poeppel, R. B.; Gangopadhyay, A. K.; Mason, Thomas O.
In: Journal of Applied Physics, Vol. 71, No. 5, 1992, p. 2351-2355.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of silver solubility on microstructure and superconducting properties of YBa2Cu3-xAgxO7-δ superconductors
AU - Joo, J.
AU - Singh, J. P.
AU - Poeppel, R. B.
AU - Gangopadhyay, A. K.
AU - Mason, Thomas O
PY - 1992
Y1 - 1992
N2 - The effect of silver (Ag) solubility on microstructure and superconducting properties of YBa2Cu3-xAgxO7-δ (0≤x≤0.5) superconductors has been evaluated. The solubility limit of Ag for copper sites in YBCO at ambient conditions (room temperature, atmospheric pressure) was evaluated to be x≅0.06. Analysis revealed the Ag content (x) of YBCO grains to be lower than the nominal Ag content (xn) used for fabrication, probably due to processing-related problems. Part of the Ag used for fabrication segregates on the YBCO grain boundaries. The segregated Ag particles are believed to pin YBCO grains, resulting in fine-grain microstructures. For low nominal Ag content, xnc) increased from 98 to 160 A/cm2 as a function of increasing Ag content. These improvements are believed to be due to the increased oxygen content and associated microstructural changes in the YBCO. For higher nominal Ag content, xn≳0.2, however, Jc decreased rapidly with the increasing Ag content due to the precipitation of nonsuperconducting phases.
AB - The effect of silver (Ag) solubility on microstructure and superconducting properties of YBa2Cu3-xAgxO7-δ (0≤x≤0.5) superconductors has been evaluated. The solubility limit of Ag for copper sites in YBCO at ambient conditions (room temperature, atmospheric pressure) was evaluated to be x≅0.06. Analysis revealed the Ag content (x) of YBCO grains to be lower than the nominal Ag content (xn) used for fabrication, probably due to processing-related problems. Part of the Ag used for fabrication segregates on the YBCO grain boundaries. The segregated Ag particles are believed to pin YBCO grains, resulting in fine-grain microstructures. For low nominal Ag content, xnc) increased from 98 to 160 A/cm2 as a function of increasing Ag content. These improvements are believed to be due to the increased oxygen content and associated microstructural changes in the YBCO. For higher nominal Ag content, xn≳0.2, however, Jc decreased rapidly with the increasing Ag content due to the precipitation of nonsuperconducting phases.
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U2 - 10.1063/1.351088
DO - 10.1063/1.351088
M3 - Article
VL - 71
SP - 2351
EP - 2355
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 5
ER -