Magnetic structures of non-cerium analogues of heavy-fermion Ce2RhIn8: case of Nd2RhIn8, Dy2RhIn8 and Er2RhIn8

Abstract

R2RhIn8 compounds (space group P4/mmm, R is a rare-earth element) belong to a large group of structurally related tetragonal materials which involves several heavy-fermion superconductors based on Ce. We have succeeded to grow single crystals of compounds with Nd, Dy and Er and following our previous bulk measurements, we performed neutron-diffraction studies to determine their magnetic structures. The Laue diffraction experiment showed that the antiferromagnetic order below the Néel temperature is in all three compounds characterized by the propagation vector k = (1/2, 1/2, 1/2). The amplitude and direction of the magnetic moments, as well as the invariance symmetry of the magnetic structure, were determined by subsequent experiments using two- and four-circle diffractometers. The critical exponents were determined from the temperature dependence of the intensities below TN.

10 pages, 7 figures, submitted to PRB

References in corpus (5)

• Heavy-fermion superconductivity in Ce2PdIn8
• Single crystal study of the layered heavy fermion compounds Ce${}_2$PdIn${}_8$, Ce${}_3$PdIn${}_{11}$, Ce${}_2$PtIn${}_8$ and Ce${}_3$PtIn${}_{11}$
• Magnetic structure and critical behavior of GdRhIn${}_5$: resonant x-ray diffraction and renormalization group analysis
• Magnetic structure of antiferromagnetic NdRhIn5
• The magnetic structures of the anisotropic inter-metallic compounds Er${}_2$CoGa${}_8$ and Tm${}_2$CoGa${}_8$

Cited by in corpus (1)

• Switching of the magnetic order in CeRhIn${}_{5-x}$Sn${}_x$ in the vicinity of its quantum critical point