FORMATION MECHANISM STUDY OF YBA2CU4O8+ALPHA,DYBA2CU4O8+ALPHA ACCELERATED BY NITRIC-ACID

被引：21

作者：

HURNG, WM

WU, SF

SHEI, CY

HUANG, YT

LEE, WH

机构：

[1] Materials Research Laboratories, Industrial Technology Research Institute, Chutung

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 19期

关键词：

D O I：

10.1063/1.104154

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An accelerated formation of REBa2Cu4O 8+δ (RE=Y and Dy) was observed as a suitable amount of nitric acid was added. This provides an excellent route for preparing high- purity REBa2Cu4O8+δ in ∼ 30 h. X-ray diffraction and thermal analyses (TGA/DTA) were conducted to reveal the formation mechanism. The addition of nitric acid did not change the reaction routes but formed more Ba2Cu3O5 which might play an important role for the formation of REBa2Cu4O 8+δ. Magnetization data confirmed the Tc's of 80 and 75 K for as-prepared Y-124 and Dy-124, respectively.

引用

页码：2025 / 2027

页数：3

共 18 条

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