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Title: The flux pinning energy studies of (Mo/W) co-doping bulk BPSCCO superconductor
Authors: Ağıl, Aslı Asiye
Gundogmus, Hakan
Karatas, Sukru
Keywords: Solid-State
Issue Date: 2022
Publisher: Springer
Abstract: In this study, pure and Mo/W co-doped Bi-based superconducting samples were prepared by conventional solid-state reaction method. The effects of co-doping Mo and W were investigated by magneto-resistivity measurements (rho-T) under various magnetic fields. The critical current density (J(c)) was determined from the width of the hysteresis (M-H) curves using the Bean model and it was found that the pure sample showed the best value with a value of 1.53 x 10(4) A/cm(2) at 10 K. The pinning force was calculated using the J(c) values and it was found that the pure sample with the highest J(c) value naturally had the maximum pinning force which is directly proportional to J(c). The flux pinning energies (i.e., activation energies) were determined using Arrhenius plots. A thermally activated flux flow (TAFF) model was used to calculate these energies. The activation energy ranged from 0.52302 to 0.286005 eV under 0 T. In addition, resistivity measurements (rho-T) were used to calculate the coherence length (xi(0)) at 10 K.
ISSN: 0957-4522
Appears in Collections:Malzeme Bilimi ve Mühendisliği Bölümü Koleksiyonu
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