Electrical conductivity and superconductivity of metal phosphides with skutterudite-type structure prepared at high pressure

被引：85

作者：

Shirotani, I ^{[1
]}

Adachi, T ^{[1
]}

Tachi, K ^{[1
]}

Todo, S ^{[1
]}

Nozawa, K ^{[1
]}

Yagi, T ^{[1
]}

Kinoshita, M ^{[1
]}

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1996年 / 57卷 / 02期

关键词：

inorganic compounds; chemical synthesis; high pressure; electrical conductivity; superconductivity;

D O I：

10.1016/0022-3697(95)00197-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Metal phosphides with skutterudite (CoAs3)-type structure have been prepared using a wedge-type cubic-anvil high pressure apparatus. NiP3, LaRu4-xOsxP12 (x: 0, 1, 2, 3, 4) and CeRu4P12 were synthesized at around 1100 degrees C and 4 GPa. The electrical conductivity and superconductivity of these metal phosphides were studied at low temperatures. The resistivity of NiP3 was 1.6 x 10(-3)Omega cm at room temperature and decreased with decreasing temperature. A magnetic susceptibility of the phosphide showed Pauli paramagnetism. NiP3 behaves as a metal. The resistivity of CeRu4P12 increased with decreasing temperature. The semiconductive behavior was observed for this phosphide. The superconductivity of LaRu4P12, LaRu3OsP12 and LaRu2Os2P12 was observed at around 7 K The magnetic field dependence of the T-c was studied for LaRu4P12. The upper critical field (H-c2) of LaRu4P12 was 3.65 tesla at 0 K. The superconductivity of LaOs4P12 was not found above 2 K. The electronic states and the superconductivity of the metal phosphides with skutterudite-type structure are discussed.

引用

页码：211 / 216

页数：6

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