The angular dependence of AC transport losses for a BSCCO/Ag tapes in DC applied field

Author

Zhang, Guo Min ; Lin, Liang Zhen ; Xiao, Li Ye ; Qiu, Ming ; Yu, Yun Jia

Author_Institution

Inst. of Electr. Eng., Chinese Acad. of Sci., Zhengzhou, China

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

2972

Lastpage

2975

Abstract

In the application of high temperature superconductors, the superconducting tapes are often exposed to magnetic fields with different orientations. Thus AC losses in such cases depend not only on the magnitude of the external magnetic field, but also on its orientation with respect to the tape surface. In this paper, AC transport losses of a BSCCO/Ag tape were measured at 77 K in 48 mT, 80 mT and 120 mT DC magnetic fields, respectively. The angle between the direction of the magnetic field and the wide side of the tape varied from 0 to 90 degrees with a step of 10 degrees. Using the theoretical model we had proposed for the angular dependence of critical current, we developed a theoretical model to describe the angular dependence of AC transport losses by modifying Norris formula. The comparison between the theoretical values and the measured data were presented and discussed.

Keywords

bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; silver; strontium compounds; superconducting tapes; 120 mT; 48 mT; 77 K; 80 mT; AC transport loss; BSCCO/Ag tape; BiSrCaCuO-Ag; DC magnetic field; Norris model; angular dependence; critical current; high temperature superconductor; Anisotropic magnetoresistance; Bismuth compounds; Critical current; High temperature superconductors; Loss measurement; Magnetic field measurement; Magnetic fields; Magnetic materials; Superconducting films; Superconducting materials;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812078

Filename

1212247