首页> 外文会议>International symposium on superconductivity;ISS'98 >Single Crystal Study on Enchanced Flux Pinning in (Hg,Pb)(Ba,Sr)_2Ca_2Cu_3O_(8+#delta#) and (Hg,Pb)Sr_2Ca_2Cu_3O_(8+#delta)
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Single Crystal Study on Enchanced Flux Pinning in (Hg,Pb)(Ba,Sr)_2Ca_2Cu_3O_(8+#delta#) and (Hg,Pb)Sr_2Ca_2Cu_3O_(8+#delta)

机译:(Hg,Pb)(Ba,Sr)_2Ca_2Cu_3O_(8 +#delta#)和(Hg,Pb)Sr_2Ca_2Cu_3O_(8 +#delta)中的增强通量钉扎的单晶研究

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Here we report the strong enhancement effects of the cation substitutions on irreversibility (H_(irr)-T/T_c) and fishtail (H_(s.p.)-T/T_c) line positions of Hg-1223 deduced from magnetization measurements of single crystal smaples. Such an enhancement was attributed to reduced electronic anisotropy caused mainly by substitutions of Ba by Sr and enhanced flux pinning properties due to the possible inhomogeneity in the Hg/Pb distribution in the studied single crystals. The high values of T_c [>110 K] and J_c(77K,1T) [>3x10~4A/cm~2] in addition to the peak-effect phenomenon [1.0
机译:在这里我们报告了阳离子取代对Hg-1223的不可逆性(H_(irr)-T / T_c)和鱼尾(H_(s.p。)-T / T_c)线位置的强烈增强作用,该作用是根据单晶枫木的磁化强度测量得出的。这种增强归因于主要由Sr取代Ba引起的电子各向异性的降低,以及由于研究的单晶中Hg / Pb分布可能不均匀而导致的通量钉扎特性增强。 T_c [> 110 K]和J_c(77K,1T)[> 3x10〜4A / cm〜2]的高值,除了峰效应现象[1.0

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