Abstract
The doping effect of diamond nanoparticles on the superconducting properties of MgB2 bulk material has been studied. It is found that the superconducting transition temperature Tc of MgB2 is suppressed by the diamond doping, however, the irreversibility field Hirr and the critical current density Jc are systematically enhanced. Microstructural analysis shows that the diamond-doped MgB2 superconductor consists of tightly-packed MgB2 nano-grains (∼50-100 nm) with highly dispersed and uniformly distributed diamond nanoparticles (∼10-20 nm) inside the grains. The highly density of dislocations and diamond nanoparticles may be responsible for the enhanced flux pinning in the diamond-doped MgB2.
| Original language | English |
|---|---|
| Pages (from-to) | 1182-1186 |
| Number of pages | 5 |
| Journal | Superconductor Science and Technology |
| Volume | 16 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2003 Oct |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Doping effect of nano-diamond on superconductivity and flux pinning in MgB2. / Cheng, C. H.; Zhang, H.; Zhao, Y.; Feng, Y.; Rui, X. F.; Munroe, P.; Zeng, H. M.; Koshizuka, N.; Murakami, Masato.
In: Superconductor Science and Technology, Vol. 16, No. 10, 10.2003, p. 1182-1186.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Doping effect of nano-diamond on superconductivity and flux pinning in MgB2
AU - Cheng, C. H.
AU - Zhang, H.
AU - Zhao, Y.
AU - Feng, Y.
AU - Rui, X. F.
AU - Munroe, P.
AU - Zeng, H. M.
AU - Koshizuka, N.
AU - Murakami, Masato
PY - 2003/10
Y1 - 2003/10
N2 - The doping effect of diamond nanoparticles on the superconducting properties of MgB2 bulk material has been studied. It is found that the superconducting transition temperature Tc of MgB2 is suppressed by the diamond doping, however, the irreversibility field Hirr and the critical current density Jc are systematically enhanced. Microstructural analysis shows that the diamond-doped MgB2 superconductor consists of tightly-packed MgB2 nano-grains (∼50-100 nm) with highly dispersed and uniformly distributed diamond nanoparticles (∼10-20 nm) inside the grains. The highly density of dislocations and diamond nanoparticles may be responsible for the enhanced flux pinning in the diamond-doped MgB2.
AB - The doping effect of diamond nanoparticles on the superconducting properties of MgB2 bulk material has been studied. It is found that the superconducting transition temperature Tc of MgB2 is suppressed by the diamond doping, however, the irreversibility field Hirr and the critical current density Jc are systematically enhanced. Microstructural analysis shows that the diamond-doped MgB2 superconductor consists of tightly-packed MgB2 nano-grains (∼50-100 nm) with highly dispersed and uniformly distributed diamond nanoparticles (∼10-20 nm) inside the grains. The highly density of dislocations and diamond nanoparticles may be responsible for the enhanced flux pinning in the diamond-doped MgB2.
UR - http://www.scopus.com/inward/record.url?scp=0142091507&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0142091507&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/16/10/310
DO - 10.1088/0953-2048/16/10/310
M3 - Article
AN - SCOPUS:0142091507
VL - 16
SP - 1182
EP - 1186
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 10
ER -