【摘要】 测量了烧结SrRuO3多晶样品的零场冷却和加场冷却磁化强度和交流磁化率。交流磁化率的温度曲线的峰随外加直流偏场的增大向低温方向移动。继续增大直流偏场,一个峰分裂为两个峰,其中低温下的峰继续向低温方向移动,另一个高温处的峰却向高温方向移动。在不同频率下测量零偏场下的交流磁化率,随频率增高峰值减小,但峰的位置并没有像以前报道的那样向高温方向移动。可见,烧结SrRuO3 并没有显示自旋玻璃行为,而是普通铁磁体。更多还原

【Abstract】 Zero-field-cooled (ZFC) and field-cooled (FC) DC magnetization and AC susceptibility of sintered SrRuO3 samples were measured over the magnetic ordering temperature. The peak in curve of susceptibility vs temperature shifts to lower temperature when the bias field increases. As the field further increases, the peak breaks into two peaks. One peak still shifts to lower temperature; the other shifts to higher temperature. Zero bias field susceptibility was measured at different frequencies. The peak value decreases with the increase of frequency, but it does not shift to higher temperature as reported previously. The results show that SrRuO3 is not spin glass, but ferromagnet.更多还原