Experimental Investigation of the Phase Relations in the Fe-Zr-Y Ternary System

The phase relations of the Fe-Zr-Y system at 973 K and 1073 K were experimentally investigated by using the equilibrated alloys. New ternary compounds τ3-Fe3ZrY and τ4-Fe10Zr5Y2 were found in this ternary system. The solubility of Y in Fe2Zr was measured to be 3.5 at.% and the third component can hardly dissolve in the other binary intermetallic phases. Experiments have verified that Fe2.9Zr0.5Y0.5 has a solid solubility ranging from Fe73Zr12Y14 to Fe77Zr9Y13.

Роль состояний переноса заряда "лиганд-металл" в процессах возбуждения люминесценции индолкарбоксилатов европия

The luminescence excitation energy transfer in europium and terbium indole-3-carboxylates, indole-3-acetates and indole-3-propionates as well as ternary indolecarboxylates containing 1,10-phenanthroline and 2,2'-bipyridine molecules have been studied. The luminescence excitation spectra, the lifetimes of the 5D0 (Eu3+) and 5D4 (Tb3+) states, and the luminescence intensity are analyzed. The decisive role of ligand-metal charge transfer (LMCT) states in the quenching of the luminescence of europium aromatic carboxylates containing a π-excessive pyrrole or indole fragment is demonstrated. Most europium compounds are characterized by quenching due to the depopulation of the 5D0 state of the Eu3+ ion through the low-energy LMCT state. But in some ternary compounds, the LMCT state being of higher energy participates in the nonradiative depopulation of the excited electronic states of the ligand.

Cation disorder and thermoelectric properties in layered ternary compounds MBi2Te4 (M=Ge, Sn)

Atomic-scale understanding of the microstructural properties of thermoelectric (TE) materials is critical for exploring the structure-property relations and enhancing the macroscopic performance of TE materials. Here, we demonstrate direct evidence...

Growth of bismuth and antimony-based chalcohalide single crystals by physical vapor transport method

AVBVICVII ternary compounds with special structure show strong anisotropy, which can be attributed to the double chains along b axis. The crystals have attracted widespread interests because of their unique...

Theoretical study on the controllable preparation of superhard BC2N under high pressure

High-density B-C-N ternary compounds have attracted considerable attention due to their potential and excellent properties combined with diamond and cubic boron nitride (c-BN). However, the development of B-C-N is restricted...

Thermodynamical study of (CaGa2S4)x(BaGa2S4)1−x solid solutions

The solid solutions of [Formula: see text] were synthesized by solid-phase reactions from powder components of CaS, BaS, and Ga2S3. The temperature-concentration dependences of the Gibbs free energy of formation of [Formula: see text] solid solutions from ternary compounds and phase diagrams of the CaGa2S4–BaGa2S4 were determined by a calculation method. It was revealed that continuous solid solutions are formed in these systems. The spinodal decomposition of [Formula: see text] solid solutions into two phases is predicted at ordinary temperatures.