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Showing 1 to 10 of 10 for “"Flux pinning"”.

  1. Flux pinning in superconducting Pb-Na

    Bissell, Philip RaymondPreston Polytechnic1976

    … The discussion is extended to consider flux pinning in the bulk and on the surface in the mixed state. The apparatus used to measure the a.c. flux penetration into a Pb-Na cylindrical single crystal is described together with the experimental techniques employed. The measurements of …

    cent-lancashire Repository record

  2. Microstructure and flux-pinning characteristics in (Y,NdBa2Cu3O(7-[gamma] high-Tc superconductors

    Mahmoud, Ahmed SalemUNSW, Sydney2000

    unsw Repository record

  3. Transport properties and modification of the flux pinning in single crystal bismuth cuprate superconductors

    Cutro, Janet AnnMassachusetts Institute of Technology1997

    Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.

    mit Repository record

  4. Enhanced High-Field Flux Pinning in YBa2Cu3O7-x Thin Films Through Engineering of Ba2YTaO6 Artificial Pinning Centres

    Bedford, ThomasUniversity of Cambridge2023

    … is an understanding of the most effective pinning centre materials at low temperatures (10 K – 30 K) and high magnetic fields (B > 10T) for enhancing the critical current densities of these materials. This thesis investigates the effectiveness of the double perovskite material Ba2YTaO6 in …

    cambridge Repository record

  5. Applications of High-Intensity Ultrasound for Synthesis and Modification of Advanced Materials

    Prozorov, TatianaUniversity of Illinois at Urbana-Champaign2015

    … are introduced into the superconductor's bulk (""pinning""). Ultrasonic irradiation of alkane slurries containing polycrystalline superconducting materials, with Fe(CO)5 or MO(CO) 6 leads to embedding of produced in situ ferromagnetic Fe2O3 or Mo2O5 nanoparticles into the bulk of superconducting …

    uiuc Repository record

  6. Microstructural control and superconducting properties of YBa₂Cu₃O₇₋ₓ melt textured single crystals

    Jongprateep, OrataiUniversity of Missouri--Rolla2016

    … further understanding of the crystal growth and flux pinning mechanisms. This research is aimed at constituting a contribution to the knowledge base for the Y123 high temperature superconductor field by extending the study of processing conditions involved in controlling the microstructure of the …

    must-thes Repository record

  7. Electrical and magnetic properties of twin-free single-crystal praseodymium-doped YBa2Cu3O7-d

    Manson, Jonathan2011

    … the Anderson-Kim model ofthermally activated flux-creep, we calculated the effective flux pinning energy, U, for each sample. The results show that for Tffc < 0.45, U exhibits a weak dependence on Pr concentration, whereas for T/Tc > 0.45, U shows a clear maximum at x = 0.2. In addition, we …

    uiuc Repository record

  8. The Effects of Annealing URu2Si2 on the Resistivity and Meissner Effect

    Pan, YangBrock University2012

    … Hc1 is relatively high, which may be due to flux pinning by the crystal defects.

    brock Repository record

  9. Modelling and experimental studies of the magnetic properties of bulk high temperature superconductors

    Xu, ZhihanUniversity of Cambridge2013

    … from their ability to trap magnetic field by flux pinning ( often described by the Bean model) and their Jc-B (the Kim model) and E-J characteristics (the flux flow resistivity model and the power law model). Chapter 2 relates the properties of bulk superconductors, and especially those …

    cambridge

  10. Numerical Calculation of Losses of Trapped Vortices Under Strong RF Meissner Current and DC Superheating Field in Type II Superconductors

    Pathirana, Walive Pathiranage Manula Randhika2021

    … λ<em><sub>m</sub></em> of the Meissner state to flux penetration by solving numerically the Ginzburg-Landau equations. A bulk superconductor, superconductor with the inhomogeneous surface disorder (S-S), and multilayered surface (S-I-S) have been thoroughly investigated in this work. Our result …

    odu Repository record