测量了巡游铁磁体SrRuO3的零场冷却(ZFC)和加场冷却(FC)的磁化强度随温度的变化关系,以及不同温度下的磁滞回线.考虑了热涨落和自由能壁垒随温度的变化,改进了Preisach模型并对测量数据进行了拟合.数值模拟再现了测量结果的变化规律,包括在不同温度下的磁滞回线和在不同外磁场下的ZFC和FC磁化强度曲线等.对拟合出的巴克豪森跳跃谱进行了讨论.
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