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Gd5Ge4低温时具有玻璃态的不稳定性,与钴氧化物La0.88Sr0.12CoO3的冻结的自旋玻璃态不同.通过分别研究经过零场冷过程后Gd5Ge4和La0.88Sr0.12CoO3在低温区域的温度循环对磁化强度的影响,发现在Gd5Ge4样品中磁化强度随着温度循环的增加而不断增大,但是在La0.88Sr0.12CoO3样品中温度循环对其磁化强度几乎没有影响.Gd5Ge4和La0.88Sr0.12CoO3的直流磁化强度和交流磁化率也进行了测量.Gd5Ge4的交流磁化率的峰并不随着频率的增加而向高温区移动,这个现象不同于La0.88Sr0.12CoO3样品的.通过不同物理参数的测量,证明了Gd5Ge4的这种磁玻璃态不同于传统的自旋玻璃态.
Gd5Ge4 has glassy instability at low temperature, which is different from the frozen spin glass state of cobalt oxide La0.88Sr0.12CoO3.Through the study of the temperature of Gd5Ge4 and La0.88Sr0.12CoO3 in the low temperature region It is found that the magnetization in Gd5Ge4 sample increases with the increase of temperature cycling, but the temperature cycling in La0.88Sr0.12CoO3 sample has almost no effect on the magnetization intensity of Gd5Ge4 and La0.88Sr0 samples. DC magnetization and AC susceptibility of 12CoO3 were also measured.The peak of AC magnetic susceptibility of Gd5Ge4 did not shift to higher temperature with the increase of frequency.The phenomenon was different from that of La0.88Sr0.12CoO3 sample.According to different physical parameters The measurements show that the magnetostrictive state of Gd5Ge4 is different from the traditional spin-glass state.