室温磁热效应直接测量仪的误差分析

Error Analysis for Room Temperature MCE Direct Measurement Automatic Device

简单介绍了室温磁热效应测量仪的组成、工作原理及其优点;用金属G d作为标准样品,用两个不同尺寸的温度传感器,测量了两个大小不同的样品。结果表明,相同条件下测量的数据重复性很好,而不同条件下测量的数据有一些差别,对此进行了分析,发现测量样品时特别是样品较小时,温度传感器的热容以及绝热条件等因素是引起误差的主要原因。

This paper simply introduces the make-ups, working principle and advantages of the room temperature MCE direct measurement automatic device. Two Gd metal samples were repeatedly measured using two different size temperature sensors in this device. The results show that the measurement data with the same conditions have a good agreement and that the measurement data with the different conditions have an obvious disagreement. The factors resulting in the errors were analyzed. We find that when samples, especially small size samples, are measured, the temperature sensor heat capacity, adiabatic condition,and so on are the main influence factors on the measurement data.