Abstract
We have studied the effect of precursor preparation methods on the superconducting properties of (Nd, Sm, Eu)-Ba-Cu-O melt-textured in 1% O2-Ar. X-ray diffraction analyses confirmed that melt-quenching was effective in suppressing the formation of RE rich RE1+xBa2-xCu3Oy precursor powders compared to a sintering method, and thus resulted in a sharp superconducting transition with an onset Tc exceeding 94.5 K. A clear secondary peak effect was observed in the magnetization curves, which shows that the field induced pinning is active like the other RE-Ba-Cu-O (RE; Nd, Sm, Eu, Gd). One can conclude that poor superconducting properties of (Nd, Sm, Eu)-Ba-Cu-O obtained in the previous reports are not intrinsic to the system but to an unoptimized precursor preparation method.
| Original language | English |
|---|---|
| Pages (from-to) | 39-42 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 309 |
| Issue number | 1-2 |
| Publication status | Published - 1998 Dec 1 |
| Externally published | Yes |
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Keywords
- (Nd, Sm, Eu)-Ba-Cu-O
- Critical current density
- Critical temperature
- Melt process
- Melt quenching
- Peak effect
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Improvement of the superconducting properties in (Nd, Sm, Eu)-Ba-Cu-O using melt-quenched precursors. / Miryala, Muralidhar; Murakami, Masato.
In: Physica C: Superconductivity and its Applications, Vol. 309, No. 1-2, 01.12.1998, p. 39-42.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Improvement of the superconducting properties in (Nd, Sm, Eu)-Ba-Cu-O using melt-quenched precursors
AU - Miryala, Muralidhar
AU - Murakami, Masato
PY - 1998/12/1
Y1 - 1998/12/1
N2 - We have studied the effect of precursor preparation methods on the superconducting properties of (Nd, Sm, Eu)-Ba-Cu-O melt-textured in 1% O2-Ar. X-ray diffraction analyses confirmed that melt-quenching was effective in suppressing the formation of RE rich RE1+xBa2-xCu3Oy precursor powders compared to a sintering method, and thus resulted in a sharp superconducting transition with an onset Tc exceeding 94.5 K. A clear secondary peak effect was observed in the magnetization curves, which shows that the field induced pinning is active like the other RE-Ba-Cu-O (RE; Nd, Sm, Eu, Gd). One can conclude that poor superconducting properties of (Nd, Sm, Eu)-Ba-Cu-O obtained in the previous reports are not intrinsic to the system but to an unoptimized precursor preparation method.
AB - We have studied the effect of precursor preparation methods on the superconducting properties of (Nd, Sm, Eu)-Ba-Cu-O melt-textured in 1% O2-Ar. X-ray diffraction analyses confirmed that melt-quenching was effective in suppressing the formation of RE rich RE1+xBa2-xCu3Oy precursor powders compared to a sintering method, and thus resulted in a sharp superconducting transition with an onset Tc exceeding 94.5 K. A clear secondary peak effect was observed in the magnetization curves, which shows that the field induced pinning is active like the other RE-Ba-Cu-O (RE; Nd, Sm, Eu, Gd). One can conclude that poor superconducting properties of (Nd, Sm, Eu)-Ba-Cu-O obtained in the previous reports are not intrinsic to the system but to an unoptimized precursor preparation method.
KW - (Nd, Sm, Eu)-Ba-Cu-O
KW - Critical current density
KW - Critical temperature
KW - Melt process
KW - Melt quenching
KW - Peak effect
UR - http://www.scopus.com/inward/record.url?scp=0032291323&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032291323&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032291323
VL - 309
SP - 39
EP - 42
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -