Antiferromagnetic order in Yb4Ru7As6 with the cubic U4Re7Si6-type structure

• Published in: Journal of magnetism and magnetic materials Vol. 556; p. 1
• Main Authors: Hirose, Yusuke, Arakawa, Kyoma, Kato, Yuta, Uwatoko, Yoshiya, Ma, Hanming, Gouchi, Jun, Honda, Fuminori, Settai, Rikio
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.08.2022; Elsevier BV
• Subjects: Antiferromagnet; Antiferromagnetism; Ferromagnetism; Magnetic permeability; Neel temperature; Single crystal; Specific heat; Weak ferromagnetism; Yb4Ru7As6; Antiferromagnet; Yb4Ru7As6; Weak ferromagnetism; Single crystal
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2022.169327

We investigated the electronic properties of Yb4Ru7As6 using single crystalline samples grown by the Bi-flux method. Yb4Ru7As6 crystallizes in the cubic U4Re7Si6-type structure. From the electrical resistivity, magnetic susceptibility, and specific heat measurements, we have found that Yb4Ru7As6 orders antiferromagnetically below the Néel temperature of 2.5 K with the moderately enhanced electronic specific heat coefficient of 120 mJ/(Yb-mol⋅K2). A rapid increment in magnetization of about 0.25 μB/Yb has been detected at low magnetic field below 4 K, implying a weak ferromagnetic component. •We succeeded in growing single crystals of a new Yb–Ru–As ternary compound, which is found to crystallize in the cubic U4Re7Si6 type structure.•We investigate the physical properties of Yb4Ru7As6.•This compound shows an antiferromagnetic transition at 2.5 K with the moderately enhanced electronic specific heat coefficient g of 120 mJ/(molYb K2).