2009 Fiscal Year Final Research Report
Improvement of connectivity of Magnesium diboride superconductors
| Project/Area Number |
19760016
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
MATSUMOTO Akiyoshi National Institute for Materials Science, 超伝導材料センター, 主任研究員 (50354303)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 超伝導材料 / 二ホウ化マグネシウム / 超伝導遷移温度 / 臨界電流密度 / 結晶粒結合性 / 上部臨界磁界 |
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| Research Abstract |
I had investigated the microstructures and superconducting properties of magnesium diboride(MgB_2). Although the MgB_2 have a high potential of upper critical fields and transition temperature, critical current density was still low. We concentrated on the connectivity of effective current flowing. The connectivity increased with addition of hydrocarbon. As the results critical current density was also increased. I understood that it was important to add appropriated amount of impurities, because the high density of impurities was also ineffective to enhance the J_c.
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