The effect of partial Lu doping on magnetic behaviour of YBCO (123) superconductors

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• 作者：Ali &#xd6 ; ztü ; rk ; İ ; brahim Dü ; zgü ; n ; Selahattin Ç ; elebi
• 关键词：YBCO superconductors ; Lu doping ; AC susceptibility ; Critical current ; DC magnetization
• 刊名：Journal of Alloys and Compounds
• 出版年：2010
• 出版时间：9 April 2010
• 年：2010
• 卷：495
• 期：1
• 页码：104-107
• 全文大小：627 K

文摘

We have investigated the effect of Lutetium doping on YBCO prepared by conventional solid-state reaction method by means of XRD, AC susceptibility and DC magnetization measurements and theoretical analysis. AC susceptibility measurements for sintered YBCO pellets have been performed as a function of temperatures at constant frequency and AC field amplitude in the absence of DC bias field. The critical current densities as a function of temperature have been estimated from the AC susceptibility data. DC magnetization measurements were done at 20 K and 77 K upon zero field cooling (ZFC) process. 50 % Lu substitution for Y on YBCO superconductors improves the critical current density and lower critical field H_c1 at low temperature region (at 20 K).