Preparation and characterization of silver sheathed BSCCO-2223 tapes

Author

Lehndorff, B. ; Busch, D. ; Eujen, R. ; Fischer, B. ; Piel, H. ; Theisejans, R.

Author_Institution

Inst. fur Materialwissenschaften, Bergische Univ., Wuppertal, Germany

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1251

Lastpage

1254

Abstract

Critical current densities of 17000 A/cm/sup 2/ were achieved in short samples of Bi-2223/Ag tapes prepared by a conventional powder in tube technique. The preparation was varied to get an optimum grain size and texture of the microstructure. Microstructural examinations and inductive measurements of the transition temperature have been performed. The critical current and current-voltage characteristics have been studied in applied magnetic field up to 8 T and at temperatures between 4.2 K and 77 K. At temperatures close to 77 K and in fields up to 1 T the critical current density is strongly field dependent and obeys a potential law. At lower temperatures a quite different behavior is observed. In addition a small pancake-coil has been built by the wind & react method and tested at 77 K.<>

Keywords

bismuth compounds; calcium compounds; composite superconductors; critical current density (superconductivity); grain size; high-temperature superconductors; powder technology; silver; strontium compounds; superconducting coils; superconducting tapes; superconducting transition temperature; texture; 1 tesla; 4.2 to 77 K; 8 tesla; Ag sheathed BiSrCaCuO-2223 tapes; BiSrCaCuO-Ag; applied magnetic field; characterization; critical current densities; critical current density; current-voltage characteristics; inductive measurements; microstructure; optimum grain size; potential law; powder in tube technique; preparation; small pancake-coil; superconducting tapes; texture; transition temperature; wind and react method; Critical current; Critical current density; Current-voltage characteristics; Grain size; Magnetic field measurement; Microstructure; Performance evaluation; Powders; Silver; Temperature dependence;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402788

Filename

402788