Magnetic state of Dy3Co

Redetermination of Dy3Ni from single-crystal X-ray data

“…The value of the displacement parameter U 22 for the Ni atom displays a high anisotropy in the b direction which may have an influence on some physical properties of the compound. Magnetic properties of Dy 3 Ni were reported by Talik et al (1996) and generally confirm this assumption which is also valid for the isotypic Dy 3 Co (Baranov et al, 1995).…”

“…For the Dy-Ni phase diagram, see: Zheng & Wang (1982). For magnetic properties of Dy 3 Ni, see: Talik et al (1996), and for magnetic properties of Dy 3 Co, see: Baranov et al (1995). For isotypic compounds, see: Tsvyashchenko (1986); Romaka et al (2011); Buschow & van der Goot (1969); Givord & Lemaire (1971).…”

Single-crystal neutron diffraction study of the magnetic structure ofEr3Co

“…8, 391 ͑1970͔͒, we conclude that the nature of the magnetic ion, whether Kramers or non-Kramers, has a decisive effect on the commensurability of the magnetic structure of R 3 Co. In particular, the commensurate magnetic structure observed in Er 3 Co originate from the Kramers character of Er 3+ ion in contrast to the incommensurate structures found earlier in R 3 For more than three decades, the study of R 3 T rare-earth ͑R͒ compounds with 3d metals ͑T =Co, Ni͒ has been a fascinating subject of condense matter physics for their diversity of interesting properties, in particular, a variety of fieldinduced magnetic phase transitions, giant magnetoresistance, and complex magnetic phase diagrams. [1][2][3] The R 3 T compounds have the largest content of rare-earth metal within the 4f-3d binaries and crystallize in the low-symmetry orthorhombic Fe 3 C-type structure ͑Pnma space group͒.…”

“…The commensurate magnetic structures ͑although, different from Er 3 Co case͒ were also found in other R 3 Co compounds with Kramerstype ions, R = Dy and Nd. 3,11 This is in contrast to the incommensurate magnetic structure established for the systems with non-Kramers rare earth, e.g., Ho 3 Co and Tb 3 Co. 5,6 The type of the magnetic structure within R 3 Co series can be understood on the base of the periodic field model which takes into account the periodic exchange field and CEF effects. 12 According to this model an incommensurable magnetic structure may be observed down to low temperatures when a non-Kramers R 3+ ion has a nonmagnetic singlet ground state due to splitting of the multiplet by lowsymmetry CEF.…”

High field magnetic properties in single crystal Nd3Co

“…[1][2][3][4][5] In our previous study 6 ͑of electrical resistivity, magnetic susceptibility and specific heat measurements͒, it was reported that Nd 3 Co has three magnetic transitions at low temperatures ͑spin reorientation temperatures T R1 ϭ8 K and T R2 ϭ13 K, and Néel temperature T N ϭ25 K͒. We also reported two field induced metamagnetic transitions along the a axis ͑transition fields of H a1 ϭ1.8 T and H a2 ϭ4.5 T͒ and one transition along the b axis ͑transition field H b ϭ1.9 T͒ below 7 T at 1.5 K. We proposed a canted magnetic structure to explain the complex magnetization process in Nd 3 Co. 6 However, a field of 7 T is not enough to achieve the saturation moment.…”