|
|||||
|
|
| 磁热效应的直接测量与测量仪器 | |
| 引用本文： | 黄焦宏,金培育,刘金荣,徐来自,张久兴.磁热效应的直接测量与测量仪器[J].稀有金属,2005,29(4):584-586. |
| 作者姓名： | 黄焦宏 金培育 刘金荣 徐来自 张久兴 |
| 作者单位： | 1. 北京工业大学新型功能材料教育部重点实验室,北京,100022;包头稀土研究院,内蒙古,包头,014010 2. 包头稀土研究院,内蒙古,包头,014010 3. 北京工业大学新型功能材料教育部重点实验室,北京,100022 |
| 基金项目： | 国家“十五”“863计划”资助项目(2002AA324010) |
| 摘 要： | 探讨了磁热效应的两种测量方法———直接测量和间接测量,阐述了这两种测量方法的特点。间接测量需要测量一系列等温磁化曲线和热容,测量时间长,费用昂贵;直接测量是测量样品的绝热温变,简单、方便。研制了室温磁热效应直接测量仪,该测量仪采用NdFeB永磁体作为磁场系统;用该仪器直接测量了室温磁致冷材料在不同温度下的绝热温变,为研究室温磁致冷材料的磁热效应提供了一种简捷、方便的测量仪器。 |
| 关 键 词： | 磁热效应 直接测量 测量仪器 |
| 文章编号： | 0258-7076(2005)04-0584-03 |
| 修稿时间： | 2005年6月10日 |
Direct Measurement and Setup for Magnetocaloric Effect |
|
| Huang Jiaohong,Jin Peiyu,Liu Jinrong,Xu Laizi,Zhang Jiuxing.Direct Measurement and Setup for Magnetocaloric Effect[J].Chinese Journal of Rare Metals,2005,29(4):584-586. | |
| Authors: | Huang Jiaohong Jin Peiyu Liu Jinrong Xu Laizi Zhang Jiuxing |
| Affiliation: | Huang Jiaohong1,2 *,Jin Peiyu2,Liu Jinrong2,Xu Laizi2,Zhang Jiuxing1 |
| Abstract: | The characteristics of the direct and indirectmeasurement methods for magnetocaloric effect were dis-cussed and compared.Theindirect measurement methodstake much more time , and costly, because a series ofmagnetization curves and specific heat should be mea-sured. And measuring the adiabatic temperature changeby direct measurement methods is more easy and conve-nient. So that ,the direct measurement instrument wasdeveloped for magnetocaloric effect . NdFeB permanentmagnet was used as a magnetic field systeminthe devel-oped measurement instrument .The setup was applied tomeasure the adiabatic temperature change of Gd,Gd3Al2,Gd5Si2Ge2,etc .at different temperatures .Theresults showthat the developed direct measurement setupis simple and convenient for the magnetocaloric effectmeasurement of magnetic refrigeration materials . |
| Keywords: | magnetocaloric effect direct measurement measurement setup |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |