LOW-TEMPERATURE SYNTHESIS OF YBA2CU3O7-X AND YBA2CU4O8 BY SOL-GEL METHOD

被引：43

作者：

MURAKAMI, H

YAEGASHI, S

NISHINO, J

SHIOHARA, Y

TANAKA, S

机构：

[1] Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo, 135

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1990年 / 29卷 / 12期

关键词：

YBA2CU3O7-X; YBA2CU4O8; ALKOXIDE; SOL-GEL METHOD; SUPERCONDUCTOR; LOW-TEMPERATURE SYNTHESIS;

D O I：

10.1143/JJAP.29.2715

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The 123 and 124 superconductors were synthesized by sol-gel methods at low temperature. Heat treatment was done below 800-degrees-C; neither special equipment nor additives were required. The 123 pellets, which were prepared at 650-degrees-C under vacuum condition (0.1 to 1.0 Pa) followed by annealing in flow oxygen at 750-degrees-C and 800-degrees-C, exhibited zero resistance at 70 and 80 K, respectively. Both the 124 pellets, which were prepared at 780-degrees-C in 1 atm oxygen atmosphere followed by either furnace cooling to room temperature or quenching from 780-degrees-C to liquid nitrogen temperature, had almost the same transition temperature (T(c)(onset) = 83-80 K, and T(c) (zero) = 76-69 K).

引用

页码：2715 / 2719

页数：5

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