综合物性测量系统振动样品磁强计测量定中心问题的探究  

Study on Locating Sample in Vibrating Specimen Magnetometer Measurement by Physical Property Measurement System

作　　者：马麟[1,2] 王朔 王维 MA Lin;WANG Shuo;WANG Wei(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;Key Laboratory of Advanced Functional Materials,Ministry of Education,Beijing 100124,China)

机构地区：[1]北京工业大学材料与制造学部,北京100124 [2]新型功能材料教育部重点实验室,北京100124

出　　处：《分析测试技术与仪器》2023年第2期191-196,共6页Analysis and Testing Technology and Instruments

基　　金：国家自然科学基金项目(面上项目:52277021)。

摘　　要：采用美国QuantumDesign公司生产的综合物性测量系统振动样品磁强计(VSM)测量组件进行磁测量时,由于测试样品的原因,经常会出现MultiVU系统自动反馈位置参数不正确的情况.通过对其自动反馈的过程进行分析,发现确定的非最佳位置获得的样品反馈磁信号和最佳位置的真实值存在对应的百分比值.利用高场下强磁信号容易找到位置参数的特性,举例说明不用增加背景磁场,对自动反馈位置参数不正确的样品进行正常测试并推算百分比值,再利用该百分比值进行数据修正的方法.方法确保测试数据的可靠性,减少不必要的时间浪费,可以提高测试效率.When the vibrating specimen magnetometer(VSM)user kit of physical property measurement system(PPMS)produced by Quantum Design is used for the magnetic measurement,it is usually shown that the MultiVU software cannot feedback the correct position parameter due to different kinds of test samples.Through the analysis of the automatic feedback the process,it was found that there was a percentage value corresponding to the feedback magnetic signal of the sample obtained from the determined non-optimal position and the real value of the optimal position.According to the convenience of getting the position parameter by the strong magnetic signal in high field,examples were given to illustrate a method for the data correction without adding the background field,which was performing normal testing and extrapolating percentage values for samples with incorrect automatic feedback position parameters,and then using the percentage values for data correction.The method can ensure the reliability of measurement data,reduce unnecessary waste of time,and improve the test efficiency.

关 键 词：磁测量 综合物性测量系统 振动样品磁强计 磁化曲线 

分 类 号：O65[理学—分析化学] TM937[理学—化学]