| 通过磁化曲线计算磁熵值 |
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| 引用本文： | 刘学东,李新华,卢佃清,李国栋.通过磁化曲线计算磁熵值[J].物理实验,2005,25(4):9-11. |
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| 作者姓名： | 刘学东 李新华 卢佃清 李国栋 |
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| 作者单位： | 1. 淮海工学院,数理科学系,江苏,连云港,222005
2. 内蒙古大学,理工学院,内蒙古,呼和浩特,010021 |
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| 摘 要： | 在恒定低磁场下测量磁性物质的M T 曲线,可以确定其居里点;在居里点附近测量一系列等温磁化曲线M H,根据磁化曲线并借助于磁系统的热力学关系式,通过数值计算方法得到磁性材料在施加或撤去外磁场过程中的磁熵变化值.
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| 关 键 词： | 磁化曲线 磁熵 居里温度 |
| 文章编号： | 1005-4642(2005)04-0009-03 |
Calculating magnetic entropy changes by magnetization curves |
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| LIU Xue-dong,LI Xin-hua,LU Dian-qing,LI Guo-dong.Calculating magnetic entropy changes by magnetization curves[J].Physics Experimentation,2005,25(4):9-11. |
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| Authors: | LIU Xue-dong LI Xin-hua LU Dian-qing LI Guo-dong |
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| Institution: | LIU Xue-dong~1,LI Xin-hua~1,LU Dian-qing~1,LI Guo-dong~2 |
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| Abstract: | The M-T curves of magnetic materials are measured in the low and stationary magnetic field, and the Curie point is made sure. A series of isothermal magnetization curve M-H are measured at the area of the Curie point. Based on magnetic systemic thermodynamics formula and magnetization curves, the magnetic entropy value by numerical methods is worked out as the magnetic material is put in or removed from the magnetic field. |
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| Keywords: | magnetization curves magnetic entropy Curie temperature |
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