The effect of starting material composition on the growth of Bi-based ribbon-like thin films

Author

Su, Yanjing ; Satoh, Yoshimasa ; Arisawa, Shunichi ; Awane, Toru ; Takano, Yoshihiko ; Ishii, Akira ; Hatano, Takeshi ; Togano, Kazumasa

Author_Institution

Nat. Inst. for Mater. Sci., Tsukuba, Japan

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

2856

Lastpage

2859

Abstract

The effect of Pb addition and Ca, Cu enrichment in starting material on the formation of Bi-2212 ribbon-like thin films on a flat Ag substrate was studied. It was found that the addition of Pb to the starting material improves the wettability of the molten phase to Ag substrate and facilitates the growth of ribbon-like thin films, and that the increase of amount of Ca and Cu in starting material suppresses the intergrowth of Bi-2201 phase in Bi-2212 ribbon-like thin films. Using (Bi, Pb)-2246 powders, with nominal composition of Bi_1.6Pb_0.4Sr_1.6Ca_3.2Cu_4.8O_y, as starting material, the superconducting Bi-2212 ribbon-like thin films with an onset T_c at 74 K were successfully synthesized on a flat Ag substrate.

Keywords

bismuth compounds; calcium compounds; high-temperature superconductors; strontium compounds; superconducting thin films; wetting; 74 K; Ag; Bi-2212 ribbon-like thin films; Bi-based ribbon-like thin films; Bi₂Sr₂CaCu₂O₈; Pb addition effects; starting material composition; wettability; Bismuth; Composite materials; Rough surfaces; Sputtering; Substrates; Superconducting films; Superconducting thin films; Surface roughness; Surface treatment; Transistors;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812040

Filename

1212217