Published November 5, 1990 | Version v1
Journal article

Formation mechanism study of REBa2Cu4O8+δ (RE=Y and Dy) accelerated by nitric acid

  • 1. Materials Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan (People's Republic of China)

Description

An accelerated formation of REBa2Cu4O8+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 REBa2Cu4O8+δ. Magnetization data confirmed the Tc's of 80 and 75 K for as-prepared Y-124 and Dy-124, respectively

Additional details

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
57
Journal Issue
19
Series
Appl. Phys. Lett.
Journal Page Range
2025-2027
ISSN
0003-6951
CODEN
APPLA