Dimensionality and pinning of magnetic vortices in the {ital c}-axis aligned Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} and (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}/Ag tapes irradiated by 5.8-GeV Pb ions

Journal Article · Tue Oct 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.10210· OSTI ID:385712

Fukumoto, Y; Zhu, Y; Li, Q; Wiesmann, H J; Suenaga, M ^[1]; Kaneko, T; Sato, K ^[2]; Shibutani, K; Hase, T; Hayashi, S ^[3]; Simon, C ^[4]

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1. Department of Applied Science, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Sumitomo Electric Industries, Ltd., Konohana, Osaka 554 (Japan)
3. Kobe Steel, Ltd., Nishi-ku, Kobe 651-22 (Japan)
4. Laboratoire Cristallographie et Sciences des Materiaux, CNRS, URSA, Institut des Sciences de la Matiere et du Rayonnement, Boulevard du Marechal Juin, 14050, Caen cedex (France)

Powder-in-the Ag tube processed Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} and (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} tapes were irradiated with 5.8-GeV Pb ions along the tape normal for the ion fluences of 0.68, 1.0, and 2.0{times}10{sup 11} cm{sup {minus}2}. The angular ({theta}) dependence of critical current densities {ital J}{sub {ital c}}({theta},{ital B},{ital T}) for these tapes was measured at temperature {ital T}=27 K and 55{endash}80 K. Cusplike sharp peaks in {ital J}{sub {ital c}}({theta},{ital B},{ital T}) were observed for {ital T}{ge}55 K when the applied magnetic field {ital B} is oriented parallel to the direction of the irradiation ({theta}=90{degree}), and {ital J}{sub {ital c}}({theta}) did not scale with the perpendicular component of {ital B}, ({ital B}{sub {perpendicular}}={ital B}sin{theta}). Based on this evidence, it was concluded that the magnetic vortices behave as linelike (three-dimensional) rather than the pancakelike [two-dimensional (2D)] objects in these irradiated superconductors. However, at 27 K, neither the peaks in {ital J}{sub {ital c}}({theta}) nor the scaling of {ital J}{sub {ital c}}({theta}) with {ital B}{sub {perpendicular}} was observed. We attribute this to the increased strength of the isotropic pinning by the small irradiation-induced defect debris relative to that of the columns and due to the increased interlayer coupling strength at reduced temperature, but not as evidence for the pancakelike 2D vortices at low temperatures. Also, for {ital T}{ge}55 K, the enhancement in the pinning strength qualitatively followed the theory by Nelson and Vinokur [Phys. Rev. Lett. {bold 68}, 2398 (1992); Phys. Rev. B {bold 48}, 13060 (1993)]. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 385712
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
GEV RANGE 01-10
HIGH-TC SUPERCONDUCTORS
ION COLLISIONS
LEAD IONS
LEAD OXIDES
MAGNETIC FLUX
MULTI-ELEMENT COMPOUNDS
PINNING
STRONTIUM OXIDES
TEMPERATURE RANGE 0013-0065 K
VORTICES