Magnetic Structure Determination of CeT2Al10 (T = Ru and Os): Single Crystal Neutron Diffraction Studies
Magnetic Structure Determination of CeT2Al10 (T = Ru and Os): Single Crystal Neutron Diffraction Studies
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DOI：
10.1143/jpsj.80.073701
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发表时间：
2011-06
影响因子：
1.7
通讯作者：
H. Kato;R. Kobayashi;T. Takesaka;T. Nishioka;M. Matsumura;K. Kaneko;N. Metoki
中科院分区：
文献类型：
--
作者：
H. Kato;R. Kobayashi;T. Takesaka;T. Nishioka;M. Matsumura;K. Kaneko;N. Metoki
用单晶样品研究了CeT2Al10(T=Ru和Os)在T0=27K和29K时的反常相变。在T0以下的有序状态下，发现了明显的超晶格反射，表明出现了有序磁矩。这两种化合物的磁结构都可以用传播矢量Q=(0，1，0)来解释，其中CeU_2Al_(10)的共线反铁磁矩为0.42(1)µB，CeOS_2Al_(10)的共线反铁磁矩为0.29(1)µB。
Neutron diffraction studies of Ce T 2 Al 10 ( T = Ru and Os), which shows an anomalous transition at T 0 = 27 K for CeRu 2 Al 10 and at 29 K for CeOs 2 Al 10 , have been carried out using single crystal samples of the compounds. In the ordered state below T 0 , obvious superlattice reflections have been found, indicating the appearance of ordered magnetic moments. The magnetic structures of both compounds could be commonly explained with a propagation vector q = (0, 1, 0), where collinear antiferromagnetic moments with magnitudes of 0.42(1) µ B for CeRu 2 Al 10 and of 0.29(1) µ B for CeOs 2 Al 10 are aligned along the c -axis.