Abstract
We studied the Ti doping effect on the superconducting properties and microstructure of sintered MgB2 bulk polycrystals. Using Ti as a sintering assistant, we have fabricated MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high Jc of 1 MA/cm2 in self-field and 3 × 105 A/cm2 in 1 T at 20 K. The large enhancement of Jc is explained by the excellent connection between grains and the high density of pinning centers served by both grain boundaries and MgO nanoparticles.
| Original language | English |
|---|---|
| Pages (from-to) | 437-443 |
| Number of pages | 7 |
| Journal | Europhysics Letters |
| Volume | 57 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Enhancement of critical current density in MgB2 bulk superconductor by Ti doping. / Zhao, Y.; Feng, Y.; Machi, T.; Cheng, C. H.; Huang, D. X.; Fudamoto, Y.; Koshizuka, N.; Murakami, Masato.
In: Europhysics Letters, Vol. 57, No. 3, 2002, p. 437-443.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Enhancement of critical current density in MgB2 bulk superconductor by Ti doping
AU - Zhao, Y.
AU - Feng, Y.
AU - Machi, T.
AU - Cheng, C. H.
AU - Huang, D. X.
AU - Fudamoto, Y.
AU - Koshizuka, N.
AU - Murakami, Masato
PY - 2002
Y1 - 2002
N2 - We studied the Ti doping effect on the superconducting properties and microstructure of sintered MgB2 bulk polycrystals. Using Ti as a sintering assistant, we have fabricated MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high Jc of 1 MA/cm2 in self-field and 3 × 105 A/cm2 in 1 T at 20 K. The large enhancement of Jc is explained by the excellent connection between grains and the high density of pinning centers served by both grain boundaries and MgO nanoparticles.
AB - We studied the Ti doping effect on the superconducting properties and microstructure of sintered MgB2 bulk polycrystals. Using Ti as a sintering assistant, we have fabricated MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high Jc of 1 MA/cm2 in self-field and 3 × 105 A/cm2 in 1 T at 20 K. The large enhancement of Jc is explained by the excellent connection between grains and the high density of pinning centers served by both grain boundaries and MgO nanoparticles.
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UR - http://www.scopus.com/inward/citedby.url?scp=0036340255&partnerID=8YFLogxK
U2 - 10.1209/epl/i2002-00479-1
DO - 10.1209/epl/i2002-00479-1
M3 - Article
VL - 57
SP - 437
EP - 443
JO - EPL
JF - EPL
SN - 0295-5075
IS - 3
ER -