【摘要】 用振动样品磁强计测量金属钆的磁化曲线，采用二步最小二乘法拟合出二元函数Ｍ（ Ｈ，Ｔ） 的表达式，然后通过热力学关系式计算出它的磁熵变．更多还原

【Abstract】 The magnetization curves of gadolinium were measured with a vibrating sample magnetometer,from which the function M(H,T) was obtained using two\|step least square fitting.Then magnetic entropy changes can be calculated.These works can provide the perliminary information needed for the design of magnetic refrigerator.更多还原