Antiferromagnetic order in Yb4Ru7As6 with the cubic U4Re7Si6-type structure
Antiferromagnetic order in Yb4Ru7As6 with the cubic U4Re7Si6-type structure
复制标题
立方 U4Re7Si6 型结构的 Yb4Ru7As6 中的反铁磁序
DOI：
10.1016/j.jmmm.2022.169327
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发表时间：
2022
影响因子：
2.7
通讯作者：
R.Settai
中科院分区：
文献类型：
--
作者：
Y. Hirose;K. Arakawa;Y. Kato;Y. Uwatoko;H. Ma;J. Gouchi;F.i Honda;R.Settai
我们用双助熔剂法生长的单晶样品研究了Yb4Ru7As6的电学性质。Yb_4Ru_7As_6为立方U_4Re_7Si_6型结构。从电阻率、磁化率和比热测量中发现，Yb4Ru7As在2.5K的Néel温度下具有6级反铁磁性，电子比热系数适度提高，为120mJ/(Yb-⋅K2)。在4K以下的低磁场下，磁化强度迅速增加，约为0.2 5μB/Yb，为弱铁磁成分。
We investigated the electronic properties of Yb 4 Ru 7 As 6 using single crystalline samples grown by the Bi-flux method. Yb 4 Ru 7 As 6 crystallizes in the cubic U 4 Re 7 Si 6-type structure. From the electrical resistivity, magnetic susceptibility, and specific heat measurements, we have found that Yb 4 Ru 7 As 6 orders antiferromagnetically below the Néel temperature of 2.5 K with the moderately enhanced electronic specific heat coefficient of 120 mJ/(Yb-mol⋅ K 2). A rapid increment in magnetization of about 0.25 μ B/Yb has been detected at low magnetic field below 4 K, implying a weak ferromagnetic component.