Preparation of Y-Ba-Cu-O superconductors with high critical current density by unidirectional melt solidification

被引：0

作者：

机构：

[1] Kase, Jun-ichiro

[2] Shimoyama, Jun-ichi

[3] Yanagisawa, Eiji

[4] Kondoh, Shinji

[5] Matsubara, Toshiya

[6] Morimoto, Takeshi

[7] Suzuki, Mitsuru

来源：

Kase, Jun-ichiro | 1600年 / 29期

关键词：

Ceramic Materials - Magnetization - Yttrium Compounds;

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摘要：

Y-Ba-Cu-O superconductors with high Jc have been prepared by a unidirectional melt solidification method. Uniformly oriented plate-shaped YBa2Cu3O7-y crystals containing small particles of Y2BaCuO5 have been grown successfully using the material with the nominal composition of Y1+xBa2-xCu3-2xOz (x&le0.4) as a starting material. The Jc values of the unidirectionally solidified Y-Ba-Cu-O samples, measured at 77 K using a four-probe method with continuous direct current, were 4600 and 12000 A/cm2 in 1 and 0.25 T, respectively. These values nearly coincided with those estimated from magnetization hysteresis loops using Bean's critical state model.

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