【摘要】 本文用振动样品磁强计测量金属钆的磁化曲线，采用二步最小乘法拟合出二元曲面 Ｍ（ Ｈ， Ｔ）的表达式，从而计算出它的磁熵变．此工作能够为设计磁冰箱提供初步的数据．更多还原

【Abstract】 The magnetization curves of gadolinium were measured with vibrating sample magnetometer, from which the formula M(H,T) was obtained using least square surface fitting. Then magnetic entropy changes can be calculated. These works are able to provide the preliminary information needed for the design of magnetic refrigerator.更多还原