| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2012: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Outline of Final Research Achievements |
We have developed a non-destructive and fast characterization method of spatially resolved critical current (Ic) distribution in superconducting tapes and wires based on the scanning Hall-probe microscopy. It has been demonstrated that this method is very powerful (1) to find a bottleneck which limits global performance of an industrial scale long length tapes in hundreds of meters, (2) to investigate the origin of local inhomogeneity based on a hybrid microscopy correlating local Ic variation and microstructural disorder in multi-scale analysis covering 7 decades of length scale from hundreds of meters down to tens of micro-meters, (3) to establish the processes for narrow and/or multifilamentary HTS conductors for the reduction of magnetization in magnet applications and of AC losses in power applications. We have also established a physical model to describe in-field current transport properties in HTS tapes based on the statistical analysis of Ic variation in long length tapes.
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