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Title: The system Ag{sub 2}Se-Ho{sub 2}Se{sub 3} in the 0-50 mol.% Ho{sub 2}Se{sub 3} range and the crystal structure of two polymorphic forms of AgHoSe{sub 2}

Abstract

The phase diagram of the Ag{sub 2}Se-Ho{sub 2}Se{sub 3} system in the range of 0-50mol.% Ho{sub 2}Se{sub 3} was constructed with the results of XRD and differential thermal analysis. A dimorphous compound exists in the system at the equimolar ratio of the components. The investigated part of the Ag{sub 2}Se-AgHoSe{sub 2} diagram is of the eutectic type with the eutectic coordinates 7mol.% Ho{sub 2}Se{sub 3} and 1125K. The crystal structure of the high-temperature modification of AgHoSe{sub 2} was studied by X-ray powder diffraction method. {alpha}-AgHoSe{sub 2} is described as a NaCl structure (space group Fm3-barm) with the lattice parameter a=5.7623(3)A. Atomic parameters were calculated in the isotropic approximation (R{sub I}=0.0434 and R{sub P}=0.0636). The crystal structure of {beta}-AgHoSe{sub 2} was determined by X-ray structure analysis and was refined to R=0.0487.

Authors:
 [1];  [1];  [2];  [3];  [4];  [5]
  1. Department of General and Inorganic Chemistry, Volyn State University, 13 Voli Ave, 43025 Lutsk (Ukraine)
  2. Department of General and Inorganic Chemistry, Ivan Franko National University of Lviv, 6 Kyryla and Mefodiya St., 79005 Lviv (Ukraine)
  3. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090 (Russian Federation)
  4. Laboratory of Crystal Chemistry, Institute of Inorganic Chemistry, SB RAS, Novosibirsk 630090 (Russian Federation)
  5. Laboratory of Electron Microscopy and Submicron Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090 (Russian Federation)
Publication Date:
OSTI Identifier:
21000654
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 42; Journal Issue: 6; Other Information: DOI: 10.1016/j.materresbull.2006.09.012; PII: S0025-5408(06)00373-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHEMICAL PREPARATION; CUBIC LATTICES; DIFFERENTIAL THERMAL ANALYSIS; EUTECTICS; HOLMIUM SELENIDES; LATTICE PARAMETERS; PHASE DIAGRAMS; SILVER SELENIDES; SODIUM CHLORIDES; SPACE GROUPS; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Sachanyuk, V P, Parasyuk, O V, Fedorchuk, A O, Atuchin, V V, Pervukhina, N V, and Plotnikov, A E. The system Ag{sub 2}Se-Ho{sub 2}Se{sub 3} in the 0-50 mol.% Ho{sub 2}Se{sub 3} range and the crystal structure of two polymorphic forms of AgHoSe{sub 2}. United States: N. p., 2007. Web. doi:10.1016/j.materresbull.2006.09.012.
Sachanyuk, V P, Parasyuk, O V, Fedorchuk, A O, Atuchin, V V, Pervukhina, N V, & Plotnikov, A E. The system Ag{sub 2}Se-Ho{sub 2}Se{sub 3} in the 0-50 mol.% Ho{sub 2}Se{sub 3} range and the crystal structure of two polymorphic forms of AgHoSe{sub 2}. United States. doi:10.1016/j.materresbull.2006.09.012.
Sachanyuk, V P, Parasyuk, O V, Fedorchuk, A O, Atuchin, V V, Pervukhina, N V, and Plotnikov, A E. Tue . "The system Ag{sub 2}Se-Ho{sub 2}Se{sub 3} in the 0-50 mol.% Ho{sub 2}Se{sub 3} range and the crystal structure of two polymorphic forms of AgHoSe{sub 2}". United States. doi:10.1016/j.materresbull.2006.09.012.
@article{osti_21000654,
title = {The system Ag{sub 2}Se-Ho{sub 2}Se{sub 3} in the 0-50 mol.% Ho{sub 2}Se{sub 3} range and the crystal structure of two polymorphic forms of AgHoSe{sub 2}},
author = {Sachanyuk, V P and Parasyuk, O V and Fedorchuk, A O and Atuchin, V V and Pervukhina, N V and Plotnikov, A E},
abstractNote = {The phase diagram of the Ag{sub 2}Se-Ho{sub 2}Se{sub 3} system in the range of 0-50mol.% Ho{sub 2}Se{sub 3} was constructed with the results of XRD and differential thermal analysis. A dimorphous compound exists in the system at the equimolar ratio of the components. The investigated part of the Ag{sub 2}Se-AgHoSe{sub 2} diagram is of the eutectic type with the eutectic coordinates 7mol.% Ho{sub 2}Se{sub 3} and 1125K. The crystal structure of the high-temperature modification of AgHoSe{sub 2} was studied by X-ray powder diffraction method. {alpha}-AgHoSe{sub 2} is described as a NaCl structure (space group Fm3-barm) with the lattice parameter a=5.7623(3)A. Atomic parameters were calculated in the isotropic approximation (R{sub I}=0.0434 and R{sub P}=0.0636). The crystal structure of {beta}-AgHoSe{sub 2} was determined by X-ray structure analysis and was refined to R=0.0487.},
doi = {10.1016/j.materresbull.2006.09.012},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 6,
volume = 42,
place = {United States},
year = {2007},
month = {6}
}