TITLE

Decoration of flux pinning positions in YBa2Cu3O7-δ superconductors

AUTHOR(S)
Jou, C. J.; Weber, E. R.; Washburn, J.; Soffa, W. A.
PUB. DATE
January 1988
SOURCE
Applied Physics Letters;1/25/1988, Vol. 52 Issue 4, p326
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Flux pinning in the sintered high Tc oxide superconductors, YBa2Cu3O7-δ, in the vortex state has been demonstrated for the first time using the Bitter pattern technique and scanning electron microscopy. External magnetic fields of 150 or 800 G perpendicular to the specimen surfaces were applied during the evaporation of cobalt after the specimens cooled with liquid nitrogen had reached a temperature below Tc. All specimens thus decorated with cobalt show nonuniformly distributed flux pinning positions as would be expected due to the porosity and multiphase character of the specimens as well as the relatively low field applied.
ACCESSION #
9825736

 

Related Articles

  • Transition from Thermally Activated to Regular Flow of Magnetic Flux Vortices in HTSC. Kushnir, V. N.; Petrov, A. Yu.; Prischepa, S. L. // Physics of the Solid State;Sep2000, Vol. 42 Issue 9, p1596 

    The effect of structural inhomogeneities in a superconductor on a vortex medium flow in weak magnetic fields at temperatures varying from 78 to 83 K for various bias current densities is investigated by using transport measurements of Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8 + ][sub x] thin-film...

  • Superconductivity Enhancement in FeO Doped YBaCuO. Dong, Xueguang; An, Pengfei; Zhang, Jing; Zhang, Hongguang; Li, Yongtao; Liu, Hao; Ge, Xiaopeng; Li, Qi // Journal of Superconductivity & Novel Magnetism;Mar2014, Vol. 27 Issue 3, p693 

    Flux pinning can lead to the enhancement of J in superconductor. In order to study the effect of magnetic particles on superconductivity, the composites of (YBaCuO)(FeO) and (YBaCuO)( α-FeO) are synthesized with former sintered at different temperatures. The field-cooling measurements show...

  • Improvement of the Intergranular Pinning Energy in the (BiPb)SrCaCuO Superconductors Doped with High Valancy Cations. Yazici, Duygu; Erdem, Murat; Ozcelik, Bekir // Journal of Superconductivity & Novel Magnetism;Jun2012, Vol. 25 Issue 4, p725 

    In the present work, Bi-Pb-V-Sr-Ca-Cu-Ti-O bulk samples with nominal composition (BiPb)VSrCaCuTiO with x=0.1 and y=0.050, 0.10, 0.2, and 0.3 have been prepared by the melt-quenching method. The magnetoresistance of the samples has been measured for different values of the applied magnetic field....

  • Enhancement of Flux Pinning in the Superconductor-Ferromagnet Bilayer Nb(Co/Pd). Syryanyy, Y.; Zhu, L. Y.; Cieplak, M. Z.; Chien, C. L. // Acta Physica Polonica, A.;Aug2010, Vol. 118 Issue 2, p399 

    The magnetometry and the magnetic force microscopy are used to study the influence of the magnetic domain size on the flux pinning in a superconducting/ferromagnetic bilayer (SFB), in which the S layer is niobium and the F layer is a Co/Pd multilayer with perpendicular magnetic anisotropy. The...

  • Flux creep in the melt-processed Bi-based oxide superconductors including normal particles. Umemura, Toshio; Egawa, Kunihiko; Kinouchi, Shin-ichi; Tanimura, Junji; Nozaki, Ayumi; Utsunomiya, Shin // Journal of Applied Physics;3/15/1992, Vol. 71 Issue 6, p2765 

    Presents a study which synthesized large single-grains by using the melt process. Procedure used to characterize the flux creep behavior in such a superconductor; Magnetization of the grains from the point of view of the flux creep; Evaluation of the temperature and magnetic field dependences...

  • Flux pinning induced stress and magnetostriction in a long elliptic cylindrical superconductor. Yong, Huadong; Zhou, Youhe // Journal of Applied Physics;Jul2013, Vol. 114 Issue 2, p023902 

    In this paper, stress and magnetostriction induced by flux pinning are studied numerically for a long elliptic cylinder superconductor. The cylinder is placed in a parallel magnetic field. Based on the critical state Bean model and variational formulation, critical current and flux distributions...

  • Influence of BaZrO Amount on Microstructure and Properties in YBaCuO Films Prepared by TFA-MOD Process. Fazhu Ding; Hongwei Gu; Teng Zhang // Journal of Superconductivity & Novel Magnetism;May2011, Vol. 24 Issue 4, p1353 

    Epitaxial YBaCuO/BaZrO films were prepared by complex metal-organic solutions including Y, Ba and Cu anhydrous trifluoroacetate precursors and Zr acetylacetonate precursors. The influence of the amount of BaZrO (BZO) on the structure and properties of YBaCuO (YBCO) films was systematically...

  • The Quest for High Critical Current in Applied High-Temperature Superconductors. Glatz, Andreas; Sadovskyy, Ivan A.; Welp, Ulrich; Kwok, Wai-Kwong; Crabtree, George W. // Journal of Superconductivity & Novel Magnetism;Jan2020, Vol. 33 Issue 1, p127 

    We present a perspective on a new critical-current-by-design paradigm to tailor and enhance the current-carrying capacity of applied superconductors. Critical-current-by-design is based on large-scale simulations of vortex matter pinning in high-temperature superconductors and has qualitative...

  • Effect of tensile strain on grain connectivity and flux pinning in Bi2Sr2Ca2Cu3Ox tapes. van der Laan, D. C.; Ekin, J. W.; van Eck, H. J. N.; Dhallé, M.; ten Haken, B.; Davidson, M. W.; Schwartz, J. // Applied Physics Letters;1/9/2006, Vol. 88 Issue 2, p022511 

    The grain-to-grain connectivity in Bi2Sr2Ca2Cu3Ox tapes is still poorly understood, even though they have been commercially available in long lengths for several years. This letter explains the effects of tensile strain on the grain-to-grain connectivity in Bi2Sr2Ca2Cu3Ox tapes. The different...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics