HIGH-PRESSURE SYNTHESIS OF PEROVSKITE-DERIVED COMPOUNDS IN THE SR-Y-CU-O SYSTEM

被引：31

作者：

ONO, A

机构：

[1] National Institute for Research in Inorganic Materials, Tsukuba, Ibaraki, 305, 1-1, Namiki

来源：

PHYSICA C | 1992年 / 198卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90203-O

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Three perovskite-derived compounds were found in the Sr-Y-Cu-O system treated at 1.6 GPa. These are Sr6Cu8Oz, Sr3.5Y1.5Cu3Oz and Sr4Y3Cu4O14. These compounds are high-pressure phases crystallized in orthorhombic structures. The stabilities of the new compounds depended highly on oxygen pressure. The non-superconducting orthorhombic phase Sr2YCu3Oz was also discovered; it was obtained at a relatively low oxygen pressure. Magnetic susceptibility measurements have revealed that the superconducting transition temperature of Sr2YCu3Oz decreased on lowering the oxygen content, z.

引用

页码：287 / 292

页数：6

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