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.
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.
出处
《物理实验》
2005年第4期9-11,共3页
Physics Experimentation
关键词
磁化曲线
磁熵
居里温度
magnetization curves
magnetic entropy
Curie temperature
