Electromagnetic properties of high angle [001] twist grain boundaries in Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// bicrystals

Author

Qiang Li ; Tsay, Y.N. ; Zhu, Y. ; Suenaga, M. ; Gu, G.D. ; Koshizuka, N.

Author_Institution

Brookhaven Nat. Lab., Upton, NY, USA

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1584

Lastpage

1587

Abstract

Detailed measurement of electrical resistivity and V-I curves as a function of temperature and magnetic field up to 9 T were performed on several superconducting Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// (Bi-2212) bicrystals with synthetic high angle [001] twist grain boundaries. We found that the resistive onset temperature and field (at level of 10 nV) for all of the measured high angle twist boundaries were similar to those for their constituent single crystals. Furthermore, these boundaries were able to carry critical current as high as the single crystals. Our results suggested absence of weak-link behavior in the high angle [001] twist grain boundaries of Bi-2212 bicrystals.

Keywords

bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; strontium compounds; superconducting transition temperature; transmission electron microscopy; twist boundaries; 0 to 9 T; 10 to 80 K; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// bicrystals; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/; HRTEM; V-I curves; critical current; electrical resistivity; electromagnetic properties; high angle [001] twist grain boundaries; magnetic field dependence; resistive onset temperature; temperature dependence; Bismuth; Electric resistance; Electric variables measurement; Electromagnetic measurements; Goniometers; Grain boundaries; Magnetic field measurement; Performance evaluation; Strontium; Temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.620878

Filename

620878