Abstract
The present investigation has focused on methods to improve the critical current density (J c ) of the disk-shape bulk MgB 2 superconductor by optimizing sintering conditions. The samples have been synthesized using a two-step process. The samples are sintered at 775 o C for 3 h in pure argon atmosphere, followed by re-sintering at 660 o C for 24 to 100 hours. X-ray diffraction showed that all the samples re-sintered are single phase and homogenous. The magnetization measurements confirm a sharp superconducting transition with T c (onset) at around 37 K. The critical current density (J c ) for MgB 2 samples increases with increasing the re-sintering time at 660 o C, in that the highest J c value of 170 kA/cm 2 at 20 K was obtained in the sample re-sintered at 660 o C for 100 h.
| Original language | English |
|---|---|
| Pages (from-to) | 102-105 |
| Number of pages | 4 |
| Journal | Physics Procedia |
| Volume | 58 |
| DOIs | |
| Publication status | Published - 2013 Jan 1 |
| Event | 26th International Symposium on Superconductivity, ISS 2013 - Tokyo, Japan Duration: 2013 Nov 18 → 2013 Nov 20 |
Fingerprint
Keywords
- critical current density (J )
- MgB
- two-step process
- x-ray diffraction
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Effect of Sintering Time on the Optimal Synthesis Condition in MgB 2 . / Ishiwata, J.; Miryala, Muralidhar; Koshizuka, N.; Inoue, Kazuo; Murakami, Masato.
In: Physics Procedia, Vol. 58, 01.01.2013, p. 102-105.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Effect of Sintering Time on the Optimal Synthesis Condition in MgB 2
AU - Ishiwata, J.
AU - Miryala, Muralidhar
AU - Koshizuka, N.
AU - Inoue, Kazuo
AU - Murakami, Masato
PY - 2013/1/1
Y1 - 2013/1/1
N2 - The present investigation has focused on methods to improve the critical current density (J c ) of the disk-shape bulk MgB 2 superconductor by optimizing sintering conditions. The samples have been synthesized using a two-step process. The samples are sintered at 775 o C for 3 h in pure argon atmosphere, followed by re-sintering at 660 o C for 24 to 100 hours. X-ray diffraction showed that all the samples re-sintered are single phase and homogenous. The magnetization measurements confirm a sharp superconducting transition with T c (onset) at around 37 K. The critical current density (J c ) for MgB 2 samples increases with increasing the re-sintering time at 660 o C, in that the highest J c value of 170 kA/cm 2 at 20 K was obtained in the sample re-sintered at 660 o C for 100 h.
AB - The present investigation has focused on methods to improve the critical current density (J c ) of the disk-shape bulk MgB 2 superconductor by optimizing sintering conditions. The samples have been synthesized using a two-step process. The samples are sintered at 775 o C for 3 h in pure argon atmosphere, followed by re-sintering at 660 o C for 24 to 100 hours. X-ray diffraction showed that all the samples re-sintered are single phase and homogenous. The magnetization measurements confirm a sharp superconducting transition with T c (onset) at around 37 K. The critical current density (J c ) for MgB 2 samples increases with increasing the re-sintering time at 660 o C, in that the highest J c value of 170 kA/cm 2 at 20 K was obtained in the sample re-sintered at 660 o C for 100 h.
KW - critical current density (J )
KW - MgB
KW - two-step process
KW - x-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85061924205&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061924205&partnerID=8YFLogxK
U2 - 10.1016/j.phpro.2014.09.037
DO - 10.1016/j.phpro.2014.09.037
M3 - Conference article
VL - 58
SP - 102
EP - 105
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3884
ER -