Antiferromagnetic transition of the caged compound TmTi 2 Al 20
Antiferromagnetic transition of the caged compound TmTi 2 Al 20
复制标题
笼状化合物TmTi 2 Al 20 的反铁磁转变
DOI：
10.1088/1742-6596/592/1/012052
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
N. Takeda and J. Akimitsu
中科院分区：
文献类型：
--
作者：
N. Kase;Y. Shimura;S. Kittaka;T. Sakakibara;S. Nakatsuji;T. Nakano;N. Takeda and J. Akimitsu
用比热C（T）和磁化强度M（T，H）测量方法研究了PrTi2Al20的空穴类似物TmTi2Al20单晶的低温磁性。在低场下，在T_N= 0.7K的M（T）中观察到反铁磁有序的反常现象。C（T）在0.7K处显示出非常尖锐的λ型异常，证实了相变。由计算的磁熵S（T），我们发现TmTi2Al20的基态可能是J= 6多重态中的磁性三重态。
We examined the low temperature magnetic properties of a single crystal of TmTi 2 Al 20, a hole analogue of PrTi 2 Al 20, by means of specific heat C (T) and magnetization M (T, H) measurements. At low field, an anomaly that can be ascribed to an antiferromagnetic ordering is observed in M (T) at T N= 0.7 K. C (T) shows a very sharp λ-type anomaly at 0.7 K, confirming the phase transition. From the calculated magnetic entropy S (T), we found that the ground state of TmTi 2 Al 20 is likely to be a magnetic Γ 5 triplet in the J= 6 multiplet.