Pinning property of Bi-2212 single crystals with columnar defects

Author

Otabe, Edmund S. ; Okamura, Kazunori ; Wada, Hiroshi ; Kiuchi, Masaru ; Yasuda, Takashi ; Okayasu, Satoru ; Matsushita, Teruo

Author_Institution

Fac. of Comput. Sci. & Syst. Eng., Kyushu Inst. of Technol., Iizuka, Japan

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

3083

Lastpage

3086

Abstract

The critical current density and the irreversibility field were measured before and after nickel ion irradiation for Bi-2212 single crystals in an optimally doped or an overdoped state in a magnetic field parallel to the direction of irradiation. The critical current density was theoretically calculated by using the summation theory and the flux creep-flow model. From the comparison with experimental results the condensation energy density was estimated for each specimen. These results are compared with a similar analysis on three-dimensional Y-123.

Keywords

bismuth compounds; calcium compounds; critical current density (superconductivity); flux creep; flux pinning; high-temperature superconductors; strontium compounds; Bi-2212 single crystals; Bi₂Sr₂CaCu₂O₈; columnar defects; condensation energy density; critical current density; flux creep-flow model; high temperature superconductor; irreversibility field; overdoped state; pinning property; summation theory; Critical current density; Crystals; Current measurement; Density measurement; Magnetic field measurement; Magnetic hysteresis; Magnetization; Nickel; Superconductivity; Temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812109

Filename

1212274