Superconductivity in MgPtSi: An orthorhombic variant of MgB2
Superconductivity in MgPtSi: An orthorhombic variant of MgB2
复制标题
DOI：
10.1103/physrevb.91.174514
复制
发表时间：
2015-05-19
影响因子：
3.7
通讯作者：
Nohara, Minoru
中科院分区：
文献类型：
--
作者：
Kudo, Kazutaka;Fujimura, Kazunori;Nohara, Minoru
通过固相反应合成了三元化合物MgPtSi。通过粉末 X 射线衍射检查该化合物表明，它以具有 Pnma 空间群的斜方 TiNiSi 型结构结晶。该结构由交替堆叠的 Mg 和 PtSi 蜂窝网络组成，这让人想起 MgB2，蜂窝网络的屈曲会导致正交变形。电学和磁学研究表明，MgPtSi 表现出超导性，转变温度为 2.5 K。然而，其同构化合物 MgRhSi 和 MgIrSi 并未被发现表现出超导性。
A ternary compound, MgPtSi, was synthesized by solid-state reaction. An examination of the compound by powder x-ray diffraction revealed that it crystallizes in the orthorhombic TiNiSi-type structure with the Pnma space group. The structure comprises alternately stacked layers of Mg and PtSi honeycomb network, which is reminiscent of MgB2, and the buckling of the honeycomb network causes orthorhombic distortion. Electrical and magnetic studies revealed that MgPtSi exhibited superconductivity with a transition temperature of 2.5 K. However, its isostructural compounds, namely, MgRhSi andMgIrSi, were not found to exhibit superconductivity.