Improved Superconducting Properties of Y123 Melt-solidified Bulks through Controlling Crystal Growth Direction and Cation Stoichiometry
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- AKASAKA Tomoyuki
- University of Tokyo
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- SHIMOYAMA Jun-ichi
- University of Tokyo
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- YAMAMOTO Akiyasu
- University of Tokyo
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- OGINO Hiraku
- University of Tokyo
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- KISHIO Kohji
- University of Tokyo
Bibliographic Information
- Other Title
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- 結晶成長方位および金属組成制御によるY123溶融凝固バルクの超伝導特性の改善
- ケッショウ セイチョウ ホウイ オヨビ キンゾク ソセイ セイギョ ニ ヨル Y123 ヨウユウ ギョウコ バルク ノ チョウデンドウ トクセイ ノ カイゼン
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Abstract
Two new approaches to fabricate Y123 melt-solidified bulks with excellent superconducting properties have been developed. One is a new method of crystal growth from a seed crystal with its c-axis parallel to the top surface, and the other is a high-temperature annealing process under a moderately reducing atmosphere after crystal growth. In the present study, the former method increased the area of high-Jc regions, and the latter enhanced Jc, particularly at positions far from the seed crystal at low temperatures through suppression of yttrium substitution for barium. The field-trapping property was also improved through introduction of a reductive annealing process prior to oxygen annealing at low temperatures.
Journal
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- TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
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TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 46 (3), 125-130, 2011
CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390282679589282304
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- NII Article ID
- 10027961775
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- NII Book ID
- AN00333419
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- ISSN
- 18800408
- 03892441
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- NDL BIB ID
- 11076137
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed