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Magnetization of Gd diffused Yba2Cu3O7-x superconductor:Experiment and theory |
F. Inaniraa, Ş. Yildizbb, K. Ozturkcc, S. Celebicc |
a Department of Physics, Art and Science Faculty, Recep Tayyip Erdogan University, 53100, Rize, Turkey; b Department of Metallurgical and Materials Engineering, Ahi Evran University, 40100, K?rsehir, Turkey; c Department of Physics, Karadeniz Technical University, 61000, Trabzon, Turkey |
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Abstract The magnetization of Gd diffused YBa2Cu3O7-x is measured by a vibrating sample magnetometer (VSM) at selected temperatures (5, 25, 50, 77 K). The experimental results for the magnetization are analyzed in the critical state framework involving Kim-Anderson field dependence Jc(H) = Jc0/(1+|H>|/H0)n of critical current density and equilibrium magnetization Meq. It is found that the inclusion of the equilibrium magnetization becomes more important at higher temperatures. At 77 K, the shape of the isothermal M-H hysteresis curve is governed by the equilibrium magnetization. Some superconducting parameters are determined by fitting the calculated curves to the experimental data.
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Received: 22 May 2012
Revised: 18 January 2013
Accepted manuscript online:
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PACS:
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74.81.Bd
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(Granular, melt-textured, amorphous, and composite superconductors)
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74.25.Ha
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(Magnetic properties including vortex structures and related phenomena)
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74.25.Wx
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(Vortex pinning (includes mechanisms and flux creep))
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Corresponding Authors:
Ş. Yildizb
E-mail: sukruyldz@gmail.com
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Cite this article:
F. Inanira, Ş. Yildizb, K. Ozturkc, S. Celebic Magnetization of Gd diffused Yba2Cu3O7-x superconductor:Experiment and theory 2013 Chin. Phys. B 22 077402
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