The irreversibility line of (Bi,Pb) sub 2 Sr sub 2 Ca sub 2 Cu sub 3 O sub 10 determined by dc magnetization

Conference · Fri Mar 01 00:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5275124

Green, S M; Lobb, C J; Greene, R L ^[1]

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1. Maryland Univ., College Park, MD (United States). Dept. of Physics and Astronomy

This paper analyzes the irreversibility line, H*(T), of c-axis aligned Bi{sub 1.65}Pb{sub 0.35}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} based on dc magnetization measurements for fields up to 50 kOe. Its temperature dependence is found to depend strongly on the criterion used to determine irreversibility. Using sensitivity criteria of 5, 15, and 25 {times} 10{sup {minus}5} emu, the low field data fit H* {approximately} H{sub 0}* 1-T/T{sub c}{sup {gamma}} with {gamma} = 2.3--2.6 and H{sub 0}* {approximately} 1.8 {times} 19{sup 4} emu. Using fitted curves, the irreversibility line follows this equation over the entire field range with {gamma} = 3.2 and H{sub 0}* {approximately} 35 {times} 10{sup 4} emu.

• OSTI ID: 5275124
• Report Number(s): CONF-900944-; CODEN: IEMGA
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Vol. 27:2; Conference: 1990 applied superconductivity conference, Snowmass, CO (United States), 24-28 Sep 1990; ISSN 0018-9464
• Country of Publication: United States
• Language: English

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