The magnetic properties of single-phase (Bi,Pb sub 2 ) sub 2 Sr sub 2 Ca sub 2 Cu sub 3 O sub y superconductors

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Modern Physics Letters B; (USA)

DOI:https://doi.org/10.1142/S0217984990000441· OSTI ID:6520532

Mei, Y; Green, S M; Manzi, A E; Luo, H L ^[1]; Politis, C ^[2]

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1. California Univ., San Diego, La Jolla, CA (USA). Dept. of Electrical and Computer Engineering
2. Kernforschungszentrum Karlsruhe, Institut fur Nukleare Festorperpkysik, Postfach 3640, D-7500 Karlsruhe (DE)

Experimental results of shielding current and Meissner effects, magnetic flux-trapping and hysteresis loops of single-phase Bi{sub 2{minus}x}Pb{sub x}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (x = 0.2 and 0.4) superconductors are presented. At 5 K, the (Bi,Pb)-Sr-Ca-Cu-oxides display a highly reversible behavior but at 30 and 77 K, the magnetization becomes more reversible in the high fields and the hysteresis is smaller in comparison with YBCO. For x = 0.4, the values of critical current density J{sub c}(H = 1500 Oe) at 5 and 30 K are estimated by the critical model to be 8000 and 2300 A/cm{sup 2}, respectively. The value of J{sub c} (H = 250 Oe) at 77 K is 400 A/cm{sub 2}. The low J{sub c} values indicates the weaker flux-pinning force in (Bi,Pb)-Sr-Ca-Cu-oxides than in YBCO. The value of the lower critical field H{sub cl}(0) obtained from M(H) curves is 410 Oe for single-phase x = 0.

• OSTI ID: 6520532
• Journal Information: Modern Physics Letters B; (USA), Vol. 4:5; ISSN 0217-9849
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH COMPOUNDS
MAGNETIC PROPERTIES
HIGH-TC SUPERCONDUCTORS
DISLOCATION PINNING
MEISSNER-OCHSENFELD EFFECT
SUPERCONDUCTIVITY
BARIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
HYSTERESIS
LEAD OXIDES
PHASE TRANSFORMATIONS
YTTRIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
LEAD COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
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