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首页> 外文期刊>Materials Science and Engineering >Influence Of Sm_2ba_4cubio_y Phase Content On J_c Of Smba_2cu_3o_7sm_2ba_4cubio_y Nano-composites
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Influence Of Sm_2ba_4cubio_y Phase Content On J_c Of Smba_2cu_3o_7sm_2ba_4cubio_y Nano-composites

机译：Sm_2ba_4cubio_y相含量对Smba_2cu_3o_7sm_2ba_4cubio_y纳米复合材料J_c的影响

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摘要

Presence of various nano-scale Y_2Ba_4CuMO_y phase inclusions in YBa_2Cu_3O_(7-δ) phase matrix are shown to improve magnetic flux pinning over wide range of magnetic fields. We first fabricate single phase of Sm_2Ba_4CuBiO_y (Sm-2411) using a solid-state reaction and then introduced them into SmBCO single grains. Top seeded melt growth (TSMG) has been used to grow SmBCO single grains in air atmosphere. A significant improvement in J_c is observed, over wide magnetic fields, for single grains containing Sm-2411nano-phase inclusions when compared to that of SmBa_2Cu_3O_(7-δ)/Sm_2BaCuO_5 composites. When compared to YBCO nano-composites, SmBCO composites are shown to exhibit high J_c at medium range of magnetic fields (1-2T) at 77 K.
机译：YBa_2Cu_3O_（7-δ）相矩阵中存在各种纳米级的Y_2Ba_4CuMO_y相夹杂物，可以改善宽磁场范围内的磁通钉扎。我们首先使用固态反应制备Sm_2Ba_4CuBiO_y（Sm-2411）单相，然后将其引入SmBCO单晶中。顶部种子熔体生长（TSMG）已用于在空气中生长SmBCO单粒。与SmBa_2Cu_3O_（7-δ）/ Sm_2BaCuO_5复合材料相比，含有Sm-2411纳米相夹杂物的单晶粒在宽磁场下观察到J_c的显着改善。与YBCO纳米复合材料相比，SmBCO复合材料在77 K的中等磁场范围（1-2T）下表现出高J_c。

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