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Superconductivity in Layerd Cuprate (RuI-x_Nbx)Sr2GdCu2O8
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نویسنده
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Abd-Shukor R. ,Kek C. A. ,Yeoh W. K.
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منبع
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pertanika journal of science and technology - 2005 - دوره : 13 - شماره : 1 - صفحه:127 -138
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چکیده
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A series of layered cuprate (ru 1_x nbx)sr2gdcu2o3 (rui212) for 0 (less than) x (less than) 1has been synthesized by the solid state reaction method. powder x-ray diffraction analysis indicates that oxygen flow is important in the formation of the ru1212 phase and superconductivity in the system. samples with nominal composition (ru 1_x nbx)sr2gdcu2o3 can be indexed as a tetragonal structure with space group p4/ mmm. the undoped compound exhibits the highest superconducting transition with t e onset 65 k. and t c zero 55 k. our results also show that c o nse t c zero doping with nb decreases the normal state conductivity and suppresses superconductivity in the system.
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کلیدواژه
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Electrical resistance ,Ru-based superconductor ,transition temperature PACS No.: 74.25.Fy ,74.62.Bf ,74.72.Jt
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آدرس
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Universiti Kebangsaan Malaysia, School of Applied Physics, Malaysia, Universiti Kebangsaan Malaysia, School of Applied Physics, Malaysia, Universiti Kebangsaan Malaysia, School of Applied Physics, Malaysia
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Authors
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