Growth and superconducting properties of Bi2Sr2CaCu2O8+δ single-crystal whiskers using tellurium-doped precursors
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- Masanori Nagao
- Kitami Institute of Technology, Kitami 090-8507, Japan
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- Mitsunori Sato
- Kitami Institute of Technology, Kitami 090-8507, Japan
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- Hiroshi Maeda
- Kitami Institute of Technology, Kitami 090-8507, Japan
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- SangJae Kim
- New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579, Japan
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- Tsutomu Yamashita
- New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579, Japan
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説明
<jats:p>Bi 2 Sr 2 CaCu 2 O 8+δ (Bi2212) single-crystal whiskers were grown by annealing sintered Te-doped Bi–Sr–Ca–Cu–O precursors that had not passed through a melt-quenched glassy state, a process that is known well at this time. The optimum nominal composition of precursors is Ca-rich Bi2Sr2Ca2Cu2Te0.5Ox with a Te content of 0.5. The whiskers contain no Te element. The precursors are mainly composed of Bi2212 and (SrCa)3TeO6 (STO) phases. The STO or the element Te acts as a catalyst in enhancing whisker growth. The critical current (Ic) with a multibranched structure of the current–voltage characteristics due to the intrinsic Josephson junctions along the c axis is quite uniform, showing that the whiskers are homogeneous and of good quality.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 79 (16), 2612-2614, 2001-10-15
AIP Publishing
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詳細情報 詳細情報について
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- CRID
- 1360855570129908736
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- ISSN
- 10773118
- 00036951
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- データソース種別
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