摘要
介绍了一种用系统自由能及热力学关系推导顺磁物质的磁熵效应关系的新方法 ,用这一方法得到的磁熵关系显示出比用传统方法导出的顺磁物质的磁熵效应关系式有更明确的物理意义 ,并得出结论 :自旋熵只有在二阶近似下才有保持不变的特点 ;
A New method to be deduced the relatioship of magnet-entropy of paramagnetic substance in this paper by the free energy of system and the relationship of thermodynamics,the result show that:1,the character of spin-entropy will be kept invariant only in second-order approximate;2.the spin-entropy and lattice-entropy of Nano are all will be decreased.
出处
《南昌大学学报（理科版）》
CAS
2000年第2期184-187,共4页
Journal of Nanchang University(Natural Science)
关键词
自由有
磁熵效应
顺磁物质
绝热去磁致冷
free energy
the relatonship of magnet-entrop
spin-entrop
lattice-entrop
nano
