Interactions in the SrS-Cu2S-Ln2S3 (Ln = Gd or Er) systems and phase-formation laws in the SrS-Cu2S-Ln2S3 (Ln = La-Lu) systems
Creators
- 1. GOU VPO Tyumenskij Gosudarstvennyj Univ., Tyumen' (Russian Federation)
Description
Structure solution has been carried out for newly synthesized compounds SrLnCuS3 (Ln = Pr, Sm, Dy, or Er). These sulfides have orthorhombic structures of the following types: SrPrCuS3 crystallizes in a BaLaCuS3-type structure, space group Pnma; SrLnCuS3 (Ln = Sm or Dy) crystallize in an Eu2CuS3-type structure, space group Pnma; and SrErCuS3, in a KZrCuS3-type structure, space group Cmcm. In studies of the SrS-Cu2S-Ln2S3 (Ln = Gd or Er) systems, the following tie-lines at 1050 K were located: SrLnCuS3-SrLn2S4, SrLnCuS3-SrS, SrLnCuS3-CuLnS2, Cu2S-SrLnCuS3, SrLnCuS3-solid solution C0 of the Cu2S-Gd2S3 (β-Cu3ErS3) system, and Ln2S3-SrLnCuS3. In the series of the SrS-Cu2S-Ln2S3 (Ln = La-Lu) systems, two tendencies are observed: monotony (decrease in the unit cell parameters and volumes and increase in the melting temperatures of SrLnCuS3 compounds in the ranges La-Nd and Sm-Lu) and periodicity (two types of triangulation of the SrS-Cu2S-Ln2S3 system, three structure types, and different space groups of SrLnCuS3 compounds; jump in the melting temperatures of the SrLnCuS3 compounds in the range Nd-Sm)
Abstract (Russian)
Установлена структура впервые синтезированных соединений SrLnCuS3 (Ln=Pr, Sm, Dy, Er). Сульфиды имеют кристаллическую структуру ромбической сингонии и принадлежат: SrPrCuS3 - к структурному типу BaLaCuS3, пр. гр. Рnma; SrLnCuS3 (Ln = Sm, Dy) - к структурному типу Eu2CuS3, пр. гр. Рnma; SrErCuS3 - к структурному типу KZrCuS3, пр. гр. Cmcm. При изучении систем SrS-Cu2S-Ln2S3 (Ln = Gd, Er) установлено положение конод при 1050 К: SrLnCuS3-SrLn2S4, SrLnCuS3-SrS, SrLnCuS3-CuLnS2, Cu2S-SrLnCuS3, SrLnCuS3 - составы из области твердого раствора С0 системы Cu2S-Gd2S3 (β-Cu3ErS3), Ln2S3-SrLnCuS3. В ряду систем SrS-Cu2S-Ln2S3 (Ln=La-Lu) установлено проявление двух закономерностей: монотонности (уменьшение параметров э.я. и их объемов, монотонное повышение температур плавления соединений SrLnCuS3 на участках La-Nd и Sm-Lu) и периодичности (существование двух типов триангуляции систем SrS-Cu2S-Ln2S3, трех типов структур, различных пр. гр. соединений SrLnCuS3, скачкообразное повышение температур плавления соединений SrLnCuS3 на участке Nd-Sm)Additional details
Additional titles
- Original title (Russian)
- Взаимодействие в системах SrS-Cу
Publishing Information
- Journal Title
- Zhurnal Neorganicheskoj Khimii
- Journal Volume
- 53
- Journal Issue
- 3
- Journal Page Range
- p. 503-508
- ISSN
- 0044-457X
- CODEN
- ZNOKAQ
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 39119805
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- COPPER SULFIDES; LATTICE PARAMETERS; MELTING POINTS; ORTHORHOMBIC LATTICES; PHASE DIAGRAMS; PHASE STUDIES; RARE EARTH COMPOUNDS; SOLID SOLUTIONS; STRONTIUM SULFIDES; TEMPERATURE RANGE 1000-4000 K; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIAGRAMS; DIFFRACTION; DISPERSIONS; HOMOGENEOUS MIXTURES; INFORMATION; MIXTURES; PHYSICAL PROPERTIES; SCATTERING; SOLUTIONS; STRONTIUM COMPOUNDS; SULFIDES; SULFUR COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE
Optional Information
- Notes
- 12 refs., 3 figs., 1 tab.