2016 年 26 巻 3 号 p. 253-259
We have studied the antiperovskite superconductors and layered Ni oxide Nd3.5Sm0.5Ni3O8 which has very similar crystal and electrical structure with high-Tc cuprate. In both systems, the materials are not high-pressure stabilized phases. For synthesis of antiperovskite material, high-pressure apparatus has been used to avoid the evaporation from the starting material with high vapor pressure. For layered Ni oxide, high-pressure apparatus has been utilized to make high density powder compact for the electrical resistivity measurement, because Nd3.5Sm0.5Ni3O8 can be obtained only with powder form. In this article, the research of layered Ni oxide Nd3.5Sm0.5Ni3O8 system is introduced.
