Synthesis and Characterization of MgB2–MgO Composite Superconductor
Synthesis and Characterization of MgB2–MgO Composite Superconductor
复制标题
MgB2-MgO复合超导体的合成与表征
DOI：
10.1007/s10948-009-0487-4
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发表时间：
2009
影响因子：
1.8
通讯作者：
Shiping Zhou
中科院分区：
文献类型：
--
作者：
Yi Bing Zhang;M. Zeng;Z. Gao;Jue Liu;H. Zhu;Shiping Zhou
本文报道了一种以廉价的细Mg粉和B2 O3粉为原料，通过一次置换反应合成MgB 2-MgO复合超导体的实用工艺。电阻率测量结果表明，超导转变在38.0 K和零电阻在36.7 K在零磁场的开始。通过交流磁化率测量观察到37 K的抗磁转变。X射线粉末衍射表明MgB 2和MgO的混合相的质量比为1：2.6。这对于研究MgB 2晶粒的边界效应和弱连接效应对样品输运性质的影响特别有用。
We reported a practical process to synthesize MgB2–MgO composite superconductor from low-cost raw materials of fine Mg and B2O3powder by a single-replacement reaction. Electrical resistivity measurement showed an onset of superconducting transition at 38.0 K and zero resistance at 36.7 K in the zero magnetic fields. The diamagnetic transition at 37 K was observed by ac susceptibility measurement. X-ray powder diffraction indicated mixed MgB2and MgO phases with a mass ratio of 1:2.6. This is particularly useful in studying the boundary and weak-link effects of MgB2grains on transport properties of the samples.
影响因子：
4
作者：
Dou, SX;Soltanian, S;Tomsic, M
通讯作者：
Tomsic, M