【作者】 侯登录； 徐静； 赵素英； 白云； 赵晶； 唐贵德；

【Author】 Hou Denglu , Xu Jing, Zhao Suying, Bai Yun, Zhao Jing, Tang Guide ( College of Physics , Hebei Normal University, Shijiazhuang 050016, China ;Hebei Industrial Vocational Technology College, Shijiazhuang 050091, China)

【机构】 河北师范大学物理学院； 河北工业职业技术学院；

【摘要】 对3d过渡元素及其化合物已有了充分的研究,但对4d族化合物的研究却很少,其中SrRuO3表现出非常有趣的ZFC/FC磁化强度的变化规律。为深入了解材料磁化的物理本质,用改进的Preisach模型对系列样品Sr1-xCaxRuO3(x=0.0,0.2,0.6)的各种磁性行为,如零场冷却(ZFC)磁化强度、加场冷却(FC)磁化强度随温度的变化以及不同温度下的磁滞回线等实验结果进行了分析模拟。通过对实验数据拟合得到巴克豪森(Barkhausen)跳跃谱的相关参数,这些参数很好的反映了材料磁化的物理本质。更多还原

【Abstract】 The elements and compounds of 3d transitional group have been sufficiently studied, but the study in 4d group is insufficient. The sample SrRuO3 shows very interesting properties, such as zero field cooled (ZFC) and field cooled (FC) magnetization. An improved Preisach model of simulating magnetic behaviors was applied to the samples Sr1-xjCaxRuO3 (x= 0.0, 0.2, 0.6), and standard experimental protocols like ZFC and FC curves of magnetization and various isothermal hysteresis loops can all be simulated by the model. Through the fitting of the experimental data , we can get the correlative parameters of Barkhaus-en jumps that reflect the physical nature of the magnetization of materials.更多还原