Maryana Lukachuk

Rare earth–transition metal–indides

Publisher Summary This chapter reviews the synthesis techniques and the crystal chemistry of rare earth-transition metal-indides. It focuses on the phase relations and physical properties, and discusses the structure-property relationships. The crystal chemistry and chemical bonding of the R – T in compounds strongly depend on the composition. The rare earth metal-rich compounds exhibit typical intermetallic structures with relatively large coordination numbers, as found in close packed arrangements. The ternary rare earth metal-transition metal-indium systems contain a vast number of individual intermetallic compounds. The crystallographic data (lattice parameters) of all known indides is discussed in the chapter. The compounds are grouped with respect to the d element component. The chemical and various physical properties of rare earth-transition metal-indides are discussed in this chapter. Most of these indides are light gray in polycrystalline form. Single crystals have metallic luster. Although the rare earth metals are relatively electropositive elements similar to the alkaline earth metals, there is a significant difference in the stability of the ternary compounds.

Re3B type intermetallics : crystal chemistry, bonding and properties

Abstract The crystal chemistry of binary and ternary intermetallic compounds with orthorhombic Re3B or MgCuAl2 type structure is reviewed. Besides the preparation techniques and crystal chemistry we focus on the structure–property relations and chemical bonding peculiarities. So far about 100 compounds with this structural arrangement have been reported. The large family of intermetallics comprises borides, aluminides, gallides, indides, thallides, and stannides, but also some magnesium and cadmium compounds.

The ternary system Tm–Ni–In at 870 K

Abstract The isothermal section of the Tm–Ni–In system at T = 870 K was constructed. Nine ternary compounds: Tm10Ni9In20, TmNi1–0.60In1–1.40, Tm2Ni2In, Tm2Ni1.78In, Tm5Ni2In4, Tm11Ni4In9, Tm4.83Ni2In1.17, Tm6Ni2In and Tm14Ni3In3 exist in the system at the temperature of investigation. Solid solutions with In/Ni and Tm/In mixing were noticed for numerous compounds. A broad substitution of Ni for In was observed for TmNi1–0.60In1–1.40, and of Tm for In for the TmNi2–TmNi4In section. An interstitial solid solution TmxNiIn, based on binary equiatomic NiIn, extends up to 8 at.% Tm (x = 0.17). The magnetic properties of TmNiIn, Tm2Ni2In and Tm5Ni2In4 are also reviewed.