| 强磁场下Pt电阻温度传感器的磁致电阻效应研究 |
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| 引用本文： | 孟秋敏,石磊,欧阳峥嵘,李洪强.强磁场下Pt电阻温度传感器的磁致电阻效应研究[J].低温物理学报,2012(2):126-128. |
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| 作者姓名： | 孟秋敏 石磊 欧阳峥嵘 李洪强 |
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| 作者单位： | 中科院强磁场科学中心 |
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| 基金项目： | 合肥物质科学研究院知识创新工程领域前沿项目(批准号:Y06JS11121BQ)资助的课题~~ |
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| 摘 要： | 以Pt电阻温度传感器(Pt-111)为研究对象,研究了其在0～16T磁场下、4.2～300K温区内的磁致电阻效应.结果表明:Pt-111在0～16T场强、4.2～77K温区内,磁效应随场强的增加和温度的降低而明显升高,77～300K温区内温度计受磁场的影响较小,其中在16T下,4.2K和300K处的磁效应分别为48.2%和1.07%;在4.2-77K温区,Pt-111由磁阻引起的测量误差场强的升高和温度的降低而明显升高,在16T、4.2K处和16T、77K处的温度测量误差分别为18.3K和1.69K.Pt-111不推荐应用在77K以下的磁场环境.
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| 关 键 词： | Pt电阻温度传感器 强磁场 变温 磁致电阻效应 |
MAGNETORESISTANCE OF PLATINUM RESISTANCE THERMOMETER IN HIGH MAGNETIC FIELDS |
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| G Qiu-min,I Lei,G Zheng-rong,I Hong-qiang.MAGNETORESISTANCE OF PLATINUM RESISTANCE THERMOMETER IN HIGH MAGNETIC FIELDS[J].Chinese Journal of Low Temperature Physics,2012(2):126-128. |
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| Authors: | G Qiu-min I Lei G Zheng-rong I Hong-qiang |
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| Institution: | High Magnetic Field Laboratory,Chinese Academy of Sciences Hefei 230031,China |
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| Abstract: | The magnetoresistance of Platinum resistance thermometer(Pt-111) for temperatures from 4.2 to 300 K and in magnetic fields up to 16T was described.The magnetoresistance of Pt-111 increases obviously with the increase of magnetic fields and decrease of temperature between 4.2and 77K,and is little above 77K.The magnetoresistance is 48.2%at 4.2K and 16T.,and is 1.07% at 300K and 16T.The temperature error arising from magnetoresistance increases with magnetic fields and decreases with temperature between 4.2 and 77K,and it’s 18.3K at 4.2K and 16T,1.69K at 77K and 16T.The Pt-111 is not recommended for use below 77K in magnetic fields. |
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| Keywords: | Platinum resistance thermometer high magnetic fields variable temperature magnetoresistance |
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