Abstract
The U/n process has been used to introduce quasi-columnar pinning centers into Nd123, textured in 1% O2, 99% Ar. The process involves adding 235U to precursor powders of the superconductor, texturing, and irradiating with thermal neutrons. The two resulting ions, from each nuclear fission, cause aligned discontinuous electronic damage of length ∼5.4 μm, which acts as a pinning center. Best results for Jc require U deposits spaced by s ≤ 5.4 μm. This has been achieved by deposits containing two foreign elements, U and Zr, and three native elements. The deposits of UZrNdBaO and Nd422 refined by the Zr, act as additional non-aligned pinning centers. The U/n process increases Jc by a factor RJ ≥ 10, to values of Jc ∼ 274 kA/cm2 at T = 77 K, B = 666 G.
| Original language | English |
|---|---|
| Pages (from-to) | 214-222 |
| Number of pages | 9 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 383 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 Dec 15 |
| Externally published | Yes |
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Keywords
- Critical current density
- Flux pinning
- Irradiation effect
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Very high values of Jc obtained in NdBa2Cu3Ox by use of the U/n process. / Weinstein, Roy; Sawh, Ravi Persad; Parks, Drew; Murakami, Masato; Mochida, Tadashi; Chikumoto, Noriko; Krabbes, Gernot; Bieger, Wolfgang.
In: Physica C: Superconductivity and its Applications, Vol. 383, No. 3, 15.12.2002, p. 214-222.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Very high values of Jc obtained in NdBa2Cu3Ox by use of the U/n process
AU - Weinstein, Roy
AU - Sawh, Ravi Persad
AU - Parks, Drew
AU - Murakami, Masato
AU - Mochida, Tadashi
AU - Chikumoto, Noriko
AU - Krabbes, Gernot
AU - Bieger, Wolfgang
PY - 2002/12/15
Y1 - 2002/12/15
N2 - The U/n process has been used to introduce quasi-columnar pinning centers into Nd123, textured in 1% O2, 99% Ar. The process involves adding 235U to precursor powders of the superconductor, texturing, and irradiating with thermal neutrons. The two resulting ions, from each nuclear fission, cause aligned discontinuous electronic damage of length ∼5.4 μm, which acts as a pinning center. Best results for Jc require U deposits spaced by s ≤ 5.4 μm. This has been achieved by deposits containing two foreign elements, U and Zr, and three native elements. The deposits of UZrNdBaO and Nd422 refined by the Zr, act as additional non-aligned pinning centers. The U/n process increases Jc by a factor RJ ≥ 10, to values of Jc ∼ 274 kA/cm2 at T = 77 K, B = 666 G.
AB - The U/n process has been used to introduce quasi-columnar pinning centers into Nd123, textured in 1% O2, 99% Ar. The process involves adding 235U to precursor powders of the superconductor, texturing, and irradiating with thermal neutrons. The two resulting ions, from each nuclear fission, cause aligned discontinuous electronic damage of length ∼5.4 μm, which acts as a pinning center. Best results for Jc require U deposits spaced by s ≤ 5.4 μm. This has been achieved by deposits containing two foreign elements, U and Zr, and three native elements. The deposits of UZrNdBaO and Nd422 refined by the Zr, act as additional non-aligned pinning centers. The U/n process increases Jc by a factor RJ ≥ 10, to values of Jc ∼ 274 kA/cm2 at T = 77 K, B = 666 G.
KW - Critical current density
KW - Flux pinning
KW - Irradiation effect
UR - http://www.scopus.com/inward/record.url?scp=0037114342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037114342&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(02)01321-7
DO - 10.1016/S0921-4534(02)01321-7
M3 - Article
AN - SCOPUS:0037114342
VL - 383
SP - 214
EP - 222
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3
ER -