Effect of heat treatment on critical current density and n-value of (Nb,Ti)/sub 3/Sn multifilamentary superconducting wire

1995 ◽  
Vol 5 (2) ◽  
pp. 1781-1784 ◽  
Author(s):  
T. Miyazaki ◽  
Y. Inoue ◽  
T. Miyatake ◽  
Y. Fukumoto ◽  
M. Shimada
Keyword(s):  
Heat Treatment ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
N Value ◽  
Superconducting Wire

Improvement of Critical Current Density of Bronze Processed Nb3Sn Superconducting Wire

1996 ◽  
pp. 1385-1390 ◽  
Author(s):  
T. Miyazaki ◽  
Y. Fukumoto ◽  
N. Matsukura ◽  
T. Miyatake ◽  
M. Shimada ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Superconducting Wire

Effect of Heat Treatment on Critical Current Density–Magnetic Field Curve for YBa2Cu3O7-δSingle Crystal and Its Microstructure

2000 ◽  
Vol 39 (Part 1, No. 10) ◽  
pp. 5822-5827 ◽  
Author(s):  
Akihiro Oka ◽  
Satoshi Koyama ◽  
Teruo Izumi ◽  
Yuh Shiohara ◽  
Junko Shibata ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Treatment ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density

Fibrous structure and critical current density of MgB2 superconducting wire

Cryogenics ◽  
2007 ◽  
Vol 47 (5-6) ◽  
pp. 282-286 ◽  
Author(s):  
D. Uchiyama ◽  
K. Mizuno ◽  
T. Akao ◽  
M. Maeda ◽  
T. Kawakami ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Fibrous Structure ◽  
Superconducting Wire

scholarly journals Microstructural and crystallographic imperfections of MgB2 superconducting wire and their correlation with the critical current density

AIP Advances ◽  
2014 ◽  
Vol 4 (1) ◽  
pp. 017113 ◽  
Author(s):  
Mohammed Shahabuddin ◽  
Nasser S. Alzayed ◽  
Sangjun Oh ◽  
Seyong Choi ◽  
Minoru Maeda ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Superconducting Wire

Critical current density and n-value of NbTi wires at low field

1995 ◽  
Vol 5 (2) ◽  
pp. 1201-1204 ◽  
Author(s):  
Y. Inoue ◽  
H. Kurahashi ◽  
Y. Fukumoto ◽  
M. Shimada
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
N Value ◽  
Low Field

CORRELATION OF CRITICAL CURRENT DENSITY WITH Cu3+ CONCENTRATION AND DENSITY IN YBa2Cu3O7−x

1989 ◽  
Vol 03 (02) ◽  
pp. 151-155 ◽  
Author(s):  
S.X. DOU ◽  
H.K. LIU ◽  
J.P. ZHOU ◽  
A.J. BOURDILLON ◽  
N. SAVVIDES ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Cold Drawing ◽  
Full Density ◽  
Density Results

Superconducting YBa 2 Cu 3 O 7 wires and tapes were fabricated by cold drawing, rolling and extrusion processes. It was found that the critical current density, after O 2 equilibration, correlates both with density and Cu 3+ concentration. Full density was achieved by using a special heat treatment, but the critical current density was low owing to the low Cu 3+ concentration present in this heavily twinned material. The best critical current density results were obtained for material with density of 92–95% of the theoretical value. The low critical current density of the porous specimens is attributed not only to a poor connectivity between grains but also to a low Cu 3+ concentration due to the instability of Cu 3+ at crystallite surfaces which increase in area with specimen porosity.

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