Zero—field—cooled and field—cooled magnetizations and magnetic susceptibility of itinerant ferromagnet SrRuO3

作     者：侯登录 姜恩永 等 

作者机构：DepartmentofAppliedPhysicsTianjinUniversityTianjin300072China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2002年第11卷第8期

页      面：827-833页

核心收录：

学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China (Grant 50072015  50172033) 

主　　题：zero-field-cooled magnetization field-cooled magnetization magnetic sus-ceptibility hysteresis loop 

摘      要：Zero-field-cooled (ZFC) magnetization, field-cooled (FC) magnetization, ac magnetic susceptibility and majorhysteresis loops of itinerant ferromagnet SrRuO3 have been measured at magnetic ordering temperatures ranging from5 to 160 K. An empirical model is proposed to calculate the measured ZFC magnetization. The result indicates that thecalculated ZFC magnetization compares well with the measured one. Based on the generalized Preisach model, boththe ZFC and FC curves are reproduced by numerical simulations. The critical temperature and critical exponents aredetermined by measuring the ac magnetic susceptibility in different bias magnetic fields at temperatures in the vicinityof the point of phase transition.