Intermetallic compounds of rare earths and non-magnetic metals

Abstract

A review is given of the physical properties, composition and crystal structure of intermetallic compounds formed between rare-earth elements and non-magnetic metals, with emphasis on the magnetic properties, Included are the properties of compounds in which the non-rare-earth component is a 4d or 5d transition element. Special consideration is given to the properties of pseudo-binary compounds.Results of magnetisation measurements, neutron diffraction and neutron scattering are discussed together with results derived from NMR, ESR and MO. *s b auer effect spectroscopy. An evaluation is given of the relevance of the experimental results with respect to the different types of exchange interactions in this class of intermetallics.Special consideration is also given to the influence of crystal field effects on the magnetic properties and, furthermore, to the occurrence of intermediate valences in several of the compounds of Ce, Sm, Eu and Yb.

First principle investigations on structural, mechanical, spin polarized electronic and magnetic properties of TmZn and TmCd

“…In the irreducible part of the Brillouin zone, 14 9 14 9 14 k points were used to calculate the total and partial density of states. The lattice parameters were taken to be 3.516 Å for TmZn and 3.665 Å for TmCd [19] for the calculations. The radius of muffin-tin spheres was chosen to be 2.5 a.u.…”

“…Here G V is Voigt's shear modulus corresponding to the upper bound of G values, and G R is Reuss's shear modulus for cubic crystals corresponding to the lower bound values, expressed as: [19] And the expressions for the bulk modulus, Young's modulus and Poisson's ratio are given by:…”

The full-potential study of ErMg

“…The magnetic properties of DyMg and ErMg using Mossbauer spectroscopy are also studied by Belakhovsky et al [4]. In an early work, Buschow et al [5] have analyzed the crystal structures and some physical properties of the intermetallics compounds of the rare earth (from La to 2 Lu) and non magnetic metals (B, Be, Mg, Ru, Rh, Pd) experimentally. The magnetic properties of rare earth magnesium compounds with CsCl structure have been determined in the temperature range 4.2 to 300K by Buschow et al [6] and also reported by Kirchmayr at etal.…”

Conductance Quantization in the Melt-Spun Cubic RCu5(R = Gd, Ho, Lu) Nanowires

“…Up to the present only very few experimental data on the transport properties of this series of compounds have been available. The light RCu 5 compounds (La, Ce, Pr, Nd, Sm, Eu) crystallize in the simple hexagonal structure, while the heavy rare earth (Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) compounds exhibit the hexagonal β CaCu 5 -type structure (P 6/mmm space group) or regular α AuBe 5 -type structure (F 43m space group) [1]. These cubic structures are metastable and at the temperatures over 700…”