Über Struktur und Eigenschaften der Halbmetalle. XVI. Mischkristallsysteme zwischen halbleitenden Chalkogeniden der vierten Hauptgruppe. II

Abstract

Die Mischkristallsysteme PbTeSnSe, PbSeSnTe, PbSeSnS, PbSeGeSe, PbSeGeS, PbSSnSe, PbSSnS, PbSGeSe, SnTeSnSe, SnTeGeSe, SnSeGeTe, und SnSeGeSe wurden durch Zusammenschmelzen der Komponenten in evakuierten Quarzampullen und Anlassen der Proben bei bestimmten Temperaturen dargestellt und röntgenographisch charakterisiert.

AIVBVI Compounds

“…This system has been investigated by x-ray diffraction analysis of alloys annealed at 550-500°C for 80 h [167]. When the concentration of GeSe is increased, the lattice constants decrease monotonically, indicating the formation of a continuous series of solid solutions.…”

“…An xray diffraction investigation of the alloys quenched from 720°C on the :PbS side and from 640°C on the SnS side has indicated a wide range of solid solutions based on tin sulfide (up to 55 mol.% PbS) and a narrow range of solid solutions based on Iead sulfide (up to 10 mol.% SnS). Before their quenching, the powdered alloys are annealed for 70 h [167]. Slow cooling of the alloys indicates the formation of the compound PbSnS 2 at 540°C [169].…”

“…Krebs [167] has investigated the widths of the solid-solution regions of the four ternary s ystems shown in Fig. 89.…”

Elementary energy bands in isovalent IV–VI orthorhombic and cubic crystals and their solid solutions

“…Some authors consider this composition as an individual phase with a symmetry of space C configuration is more stable according to our first-principles calculations of the total and formation energies. C [56,58,59], while others believe that this composition is a SnS-based solid solution [55,57,60]. The authors of [61] suggest that this system should be considered as a solid solution on the basis of the SnS compound with unexpectedly strong short-range order that can result in a superstructure.…”

“…According to [55][56][57][58][59][60][61], the PbS and SnS compounds can form a substitutional Pb x Sn 1-x S solid solution with limited solubility. The solubility of SnS in PbS is limited to 10 mol%, while that of PbS in SnS to about 50 mol%.…”