在测置材料的低温电磁性能时,如超导转变温度、临界磁场、磁化率和电阻率等、就要用到作为与试样电连接或机械连接用的焊料。焊料的超导性能(零电阻性)、迈斯纳效应、反常比热等都会影响测量的精度。本文提供一些常用焊料和低熔点焊料的超导 In the measurement of low-temperature electromagnetic properties of materials, such as the superconducting transition temperature, the critical magnetic field, magnetic susceptibility and resistivity, it is necessary to use as a sample with electrical or mechanical connection with the solder. Solder superconductivity (zero resistivity), Meissner effect, abnormal heat will affect the measurement accuracy. This article provides some commonly used solders and superconductors with low melting point solder