The results show that their magnetic properties are completely different: With the doping content increasing, the magnetization curve of La_ (0.7-x) Gd_xSr_ (0.3) MnO_3 system exhibits the transi - tion from ferromagnetism to cluster then to antiferromagnetism at low temperature;
结果发现它们的磁性质完全不同：La（0.7-x）GdxSr（0.3）MnO3体系的磁化曲线随掺杂量增加，在低温下表现为铁磁到团簇再到反铁磁；
Magnetic hysteresis loop is a reflection of the ferromagnetic materials'hysteresis characteristics of the important characteristic curve, connection magnetic hysteresis loop the vertices of the cluster of ferromagnetic materials that get basic magnetization curve.
磁滞回线是反映铁磁材料磁滞特性的重要特征曲线，连接磁滞回线簇的顶点即得到铁磁材料的基本磁化曲线。
By use of the two-site cluster approximation, we investigate the influence of exchange anisotropy and random field on the phase transition and the magnetization curve in a spin-1/2 Heisenberg system.
蒋青运用双自旋集团近似的方法研究了交换作用各向异性和无规场对自旋S=1/2海森堡系统的相变和磁化强度的影响。