Nd5Ge3中自发磁化跳变和场致不可逆性的观测
Observation of spontaneous magnetization jump and field-induced irreversibility in Nd5Ge3
摘要：
我们报告的观察自发和超急剧跳跃的低温磁化等温线的多晶Nd5Ge3。在电阻率和热容数据中也可以看到场致和超急剧的跳跃。这些跳跃伴随着场致不可逆性。在这三个数据中看到的一致性清楚地表明，自旋，电子和晶格态是强耦合的。在恒定的磁场和温度下观察到铁磁相的时间诱导生长，这意味着在低场区的磁性相的亚稳性。各种实验结果指向一个强大的磁场诱导的磁结构的不可逆性在这种化合物。
英文摘要：
We report the observation of spontaneous and ultra-sharp jumps in the low temperature magnetization isotherms of polycrystalline Nd5Ge3. Field-induced and ultra-sharp jumps are also seen in resistivity and heat capacity data. These jumps are accompanied by field-induced irreversibilities. The consistency seen in these three data clearly shows that the spin, electronic and lattice states are strongly coupled. Time-induced growth of the ferromagnetic phase is observed at a constant field and temperature, implying the metastability of the magnetic phase in the low field region. Various experimental findings point towards a strong field-induced magneto-structural irreversibility in this compound.
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