Fabrication of Single Crystal of SmBa_2Cu_3O_<7-x> by the Modified Top-Seeded Solution Growth Method in Low Oxygen Partial Pressure Atmosphere
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概要
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Single crystals of SmBa_2Cu_3O<7-x> (Sm123) have been successfully grown by a modified top-seeded solution growth (TSSG) method in 1% oxygen partial pressure atmosphere (P(O_2)=0.01 atm). Solid Sm_2BaCuO_5 (Sm211) solute and Ba-Cu-O solvent with Ba to Cu ratio of 3:5 were used in a Sm_2O_3 crucible. The Sm123 as-grown crystals were confirmed by X-ray structure analysis to have the SmBa_2Cu_3O_<7-x> tetragonal structure, and the substitution of Sm ion to the Ba site was not detected within experimental accuracy. The transport properties of the grown crystals annealed in an oxygen gas flow were measured by the direct-current four-contact method, both in the ab-plane and along the c-axis. The superconductive transition temperature was 93 K and the transition width was 0.3 K.
- 社団法人応用物理学会の論文
- 1995-11-15
著者
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Krauns Christian
Superconductivity Research Laboratory Istec
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Shiohara Y
Istec Tokyo Jpn
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Shiohara Yuh
Superconducting Research Laboratory Istec
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NAKAMURA Masaru
Superconductivity Research Laboratory, ISTEC
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Nakamura Masaru
Superconductivity Research Laboratory Istec
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Nakamura Masaru
Superconductivity Research Laboratory Isotec
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