| Budget Amount *help |
¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2009: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
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| Research Abstract |
To develop higher field superconducting magnets, application of high-T_c superconductor is necessary. In particular, rare-earth based superconductors, which are usually deposited on a high-strength metal substrate, are important candidates for high-field magnet material. In this work, an apparatus, which applies tensile/compressive strain to high-T_c superconductor, was developed. The apparatus was designed based on a four-point bending test. The author investigated strain dependence of critical current at various temperatures and magnetic fields for commercially available superconductor using the apparatus with a variable temperature insert and a cryogen-free superconducting magnet. Temperature and magnetic field are important parameter to determine the strain dependence of critical current for the rare-earth based high-Tc superconductor. A scaling law is needed to develop application devices.
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