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钕铁硼磁体磁性的近似普适规律的研究

Research on the Approximate Universal Formula of Magnetic Properties of NdFeB Magnet

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【Author】 XU Li-qin1,HUANG Jiao-hong4,ZHANG Xue-feng3,4,MA Qiang2,3,MA Ying1(1.Physics and Electronics Engineering Faculty,Guangzhou University,Guangzhou 510006,China; 2.Baotou Research Institute of Rare Earths,Baotou 014030,China; 3.Inner Mongolia Key Laboratory for Utilization of Baiyan Obo Multi-Metallic Resources: Elected State Key Laboratory,Inner Mongolia University of Science and Technology,Baotou 014010,China; 4.Mathematics,Physics and Biological Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

【机构】广州大学物理与电子工程学院；包头稀土研究院；内蒙古科技大学内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室省部共建国家重点实验室培养基地；内蒙古科技大学数理与生物工程学院；

【摘要】为了探讨钕铁硼磁体磁性的近似普适规律,把不同性能钕铁硼磁体在各温度下的退磁曲线加以归一化,这使退磁曲线显示出近似的普适性,而且其内禀矫顽力及剩磁随温度变化的规律也相似,据此导出钕铁硼磁体在各温度下退磁曲线的近似普适数学表达式,由该公式计算得到的各温度下的退磁曲线与实测曲线基本吻合。更多还原

【Abstract】 To investigate the approximate universal law of magnetic properties of NdFeB magnet,the demagnetization curves of NdFeB magnets with different properties under different temperature are normalized.Results showed that the demagnetization curves exhibited the approximate universality and the dependences of temperature on intrinsic coercive force and remanence were similar,from which the approximate universal mathematical expressions of demagnetization curves of NdFeB magnet under different temperature were derived.The calculated demagnetization curves under different temperature have good agreements with the experimental results.The formula can be used to estimate the magnetic loss of NdFeB magnet under different temperature.更多还原

【关键词】 NdFeB；退磁曲线；普适规律；
【Key words】 NdFeB； demagnetization curves； universal formula；

【文献出处】稀土 ,Chinese Rare Earths , 编辑部邮箱 ,2011年03期

【分类号】TM273
【被引频次】6
【下载频次】310

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