Improved superconducting properties for multifilament graphene-doped MgB 2 wires by an internal Mg diffusion process
Improved superconducting properties for multifilament graphene-doped MgB 2 wires by an internal Mg diffusion process
复制标题
通过内部镁扩散工艺改善多丝石墨烯掺杂 MgB 2 线的超导性能
DOI：
10.1016/j.matlet.2018.05.109
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发表时间：
2018
影响因子：
3
通讯作者：
Lian Zhou
中科院分区：
文献类型：
--
作者：
Haoran Liu;Qingyang Wang;Fang Yang;Lihua Jin;Xiaomei Xiong;Jianqing Feng;Chengshan Li;Lian Zhou
我们已经制造了6 + 1-filament MgB 2线使用内部Mg扩散（IMD）过程。对于具有1.4mm直径的3at%石墨烯（G）掺杂的长导线，在4 T下的临界电流为约530 A，这比未掺杂的样品的临界电流高0.45%。此外，在650 C 2 h退火后，与未掺杂的30%相比，G掺杂的线具有更高的不可逆应变0.38%。结果表明，掺G的IMD丝具有优良的超导性和机械性能，在实际应用中可与传统的PIT丝相媲美
We have fabricated 6 + 1-filament MgB2 wires using an internal Mg diffusion (IMD) process. For the 3 at%.graphene (G) doped long wire with 1.4 mm diameter, the critical current is about 530 A at 4 T, which is.45% higher than that of the undoped sample. Moreover, the G doped wire has higher irreversible strain of.38% in comparison to the undoped one of 30% after 650 C 2 h annealing. The obtained results show.that the G doped IMD wires with excellent superconductivity and mechanical property can compete with.the conventional PIT wires in practical application