微量のBaHfO<sub>3 </sub>を添加したYBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>y </sub></i>薄膜の低磁場下における 磁束ピンニング特性
書誌事項
- タイトル別名
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- Flux Pinning Properties in Low Magnetic Fields of YBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>y</sub></i> Thin Films Doped with a Small Amount of BaHfO<sub>3 </sub>
- 微量のBaHfO₃を添加したYBa₂Cu₃Oy薄膜の低磁場下における磁束ピンニング特性
- ビリョウ ノ BaHfO ₃ オ テンカ シタ YBa ₂ Cu ₃ Oy ハクマク ノ テイジバ カ ニ オケル ジソク ピンニング トクセイ
- Flux Pinning Properties in Low Magnetic Fields of YBa2Cu3Oy Thin Films Doped with a Small Amount of BaHfO3
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We focused on an improvement of Jc in low magnetic fields (including self-field) for applications to operations in low magnetic fields such as power cables and fault current limiters. We assumed that motion of the fluxes leads to a degradation of Jc even in low magnetic fields. In order to improve the Jc in low magnetic fields, we introduced a small amount of BHO as artificial pinning centers to YBCO thin films and evaluated the superconducting properties. We fabricated BHO-doped YBCO thin films on IBAD-MgO substrates using the pulsed laser deposition method and an excimer laser. The additive amount of BHO was in the range of 0.21 – 3.37 vol.%. The Tc of all the samples was approximately 88 K and this Tc was reduced approximately 1 K compared with the value for a pure-YBCO thin film. On the other hand, Jc at 77 K in the self-field (Jcself) of 0.42 vol.% BHOdoped samples was 5.76 MA/cm2. These values were higher than the Jcself (3.68 MA/cm2) of the pure-YBCO thin film. In addition, increasing Jcself improved the Jc in low magnetic fields below 1 T.
収録刊行物
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- 低温工学
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低温工学 48 (6), 304-308, 2013
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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詳細情報 詳細情報について
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- CRID
- 1390001204612703616
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- NII論文ID
- 10031173801
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- NII書誌ID
- AN00333419
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- COI
- 1:CAS:528:DC%2BC3sXhtlCqur%2FP
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- ISSN
- 18800408
- 03892441
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- NDL書誌ID
- 024735324
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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