| 均匀磁化介质椭球的退磁因子及退磁场 |
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| 引用本文： | 昝会萍,张引科,史毅敏.均匀磁化介质椭球的退磁因子及退磁场[J].大学物理,2009,28(12). |
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| 作者姓名： | 昝会萍 张引科 史毅敏 |
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| 作者单位： | 西安建筑科技大学,理学院,陕西西安,710055 |
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| 基金项目： | 陕西省自然科学基础研究基金资助项目(2007A15) |
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| 摘 要： | 在椭球坐标系中求解了均匀椭球磁介质在匀强磁场中的磁化问题,得到了空间磁标势、磁场、介质中退磁场和退磁因子的表达式,研究了椭球形状与退磁因子的关系,分析了介质磁化率对退磁场方向的影响.结论为:椭球磁介质内的退磁场是匀强磁场;退磁因子的大小与椭球形状有关,与椭球大小无关,沿椭球长轴方向的退磁因子较小;一般而言退磁场方向与外磁场方向既不相同也不相反.铁磁质椭球内的退磁场几乎与外磁场反向.
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| 关 键 词： | 椭球磁介质 磁化 退磁因子 退磁场 |
The demagnetizing factor and demagnetizing field of ellipsoid material in uniform magnetic field |
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| ZAN Hui-ping,ZHANG Yin-ke,SHI Yi-min.The demagnetizing factor and demagnetizing field of ellipsoid material in uniform magnetic field[J].College Physics,2009,28(12). |
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| Authors: | ZAN Hui-ping ZHANG Yin-ke SHI Yi-min |
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| Institution: | School of Science;Xi'an University of Arch.& Tech.;Xi'an;Shaanxi 710055;China |
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| Abstract: | In the ellipsoidal coordinate system,the magnetizing problem of ellipsoid magnetic material in uniform magnetic field is solved.The analytical expressions of magnetic scalar potential and magnetic field in the entire space,as well as demagnetizing factors and demagnetizing field in the material are obtained.The relation between the shape of ellipsoid material and the demagnetizing factors as well as the influence of the material susceptibility on the direction of demagnetizing field are studied.It is found ... |
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| Keywords: | ellipsoid magnetic material magnetizing demagnetizing factor demagnetizing field |
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