液氮温区金属钆（Gd）热导率研究  

Study of the Thermal Conductivity of Gadolinium at the Liquid Nitrogen Temperature Range

作　　者：张宣嘉[1] 冯仰浦[1] 许祝安[1] 徐斌鸿[1] 方明虎[1] 张其瑞[1] 曾兴斌[1] 

机构地区：[1]浙江大学,宁波大学物理系

出　　处：《低温工程》1994年第5期22-26,共5页Cryogenics

基　　金：国家及浙江省科学基金

摘　　要：详细介绍小样品热导率测量装置，用该装置测定了沪产９９．９％纯钆的热导率。发现在２３０Ｋ附近轧热导率反常，趋向极小。证实了除电子以外，磁机制对钆电导和热导有较大贡献。A thermal conductivity measuring apparatus for small samples has been developed. The thermal conductivities of Gd with a purity at 99.9%which is made in Shanghai has been measured.An abnonmality has been di-scovered-the thermal conductivities of Gd tends to minimum.This indica-tion is that in addition to electrons some magnons heat transport has effe-ct on the thermal conductivity.

关 键 词：钆 热导率 自旋波量子 液氮温区 

分 类 号：TB611[一般工业技术—制冷工程] TG146.45[一般工业技术—材料科学与工程]