四探针原理新设计的低温电阻率测量装置

New-designed Instrumentation of Low Temperature Resistivity Measurement by the Principle of Four-point Probe Method

四探针电阻率测量是研究低温状态下导体电迁移性质的常规方法。利用四探针原理新设计的电阻率测量系统采用智能仪表和计算机控制技术,大大减少了实验过程中的人为影响因素,提高了测量的精度和实验数据的可靠度。该设计具有较强的可操作性,适合于高校的教学与新材料领域的科研需要。

The four-point probe method （FPPM） eleetrotransport properties of metals and alloys at low introduced to greatly reduce the experimental error resisitivity measurement is a conventional means in study of temperatures. Some advanced intelligent instruments and a PC were by manual operation in experimenting, as well as to enhance the measurement accuracy and reliability of experimental data in this new-designed resistivity measurement system by the principle of FPPM. The designed system is very maneuverable and fit for requirement in university educating and scientific research in new material fields.