Critical currents and magnetization properties of YBCO prepared by MPMG process

H. Fujimoto; M. Murakami; S. Gotoh; K. Yamaguchi; M. Yoshida; T. Takata; N. Koshizuka; S. Tanaka

doi:10.1088/0953-2048/5/1S/016

Critical currents and magnetization properties of YBCO prepared by MPMG process

H. Fujimoto, M. Murakami, S. Gotoh, K. Yamaguchi, M. Yoshida, T. Takata, N. Koshizuka, S. Tanaka

研究成果: Article › 査読

27 被引用数 (Scopus)

抄録

YBaCuO prepared by the Melt-Powder-Melt-Growth (MPMG) process has high critical current density over 30,000 A/cm² at 77K and 1T. It has been found that non-superconducting Y₂BaCuO₅ (211) particles dispersed in the 123 superconducting phase are responsible for high J _c values. The values of critical current densities increased with increasing the volume fraction of the 211 particles. An anomalous second peak was observed in magnetization loops for some samples which showed a broad T _c transition in AC measurements, suggesting that some kinds of defects are responsible for the peak.

本文言語	English
論文番号	016
ページ（範囲）	S93-S96
ジャーナル	Superconductor Science and Technology
巻	5
号	1S
DOI	https://doi.org/10.1088/0953-2048/5/1S/016
出版ステータス	Published - 1992 12月 1
外部発表	はい

ASJC Scopus subject areas

セラミックおよび複合材料
凝縮系物理学
金属および合金
電子工学および電気工学
材料化学

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10.1088/0953-2048/5/1S/016

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AU - Fujimoto, H.

AU - Murakami, M.

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AU - Yoshida, M.

AU - Takata, T.

AU - Koshizuka, N.

AU - Tanaka, S.

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N2 - YBaCuO prepared by the Melt-Powder-Melt-Growth (MPMG) process has high critical current density over 30,000 A/cm2 at 77K and 1T. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase are responsible for high J c values. The values of critical current densities increased with increasing the volume fraction of the 211 particles. An anomalous second peak was observed in magnetization loops for some samples which showed a broad T c transition in AC measurements, suggesting that some kinds of defects are responsible for the peak.

AB - YBaCuO prepared by the Melt-Powder-Melt-Growth (MPMG) process has high critical current density over 30,000 A/cm2 at 77K and 1T. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase are responsible for high J c values. The values of critical current densities increased with increasing the volume fraction of the 211 particles. An anomalous second peak was observed in magnetization loops for some samples which showed a broad T c transition in AC measurements, suggesting that some kinds of defects are responsible for the peak.

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Critical currents and magnetization properties of YBCO prepared by MPMG process

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