DISSOCIATION OF MOLTEN TI6S(SE)I-4 AND TI5SE2BR(I) AND PHASE-EQUILIBRIA IN THE TI6SI4-TI6SEI4 AND TI5SE2BR-TL5SE2I SYSTEMS

Authors
PERESH EY LAZAREV VB BARCHII IE TSIGIKA VV SABOV MY
Citation
Ey. Peresh et al., DISSOCIATION OF MOLTEN TI6S(SE)I-4 AND TI5SE2BR(I) AND PHASE-EQUILIBRIA IN THE TI6SI4-TI6SEI4 AND TI5SE2BR-TL5SE2I SYSTEMS, Inorganic materials, 33(4), 1997, pp. 359-361
Citations number
7
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
33
Issue
4
Year of publication
1997
Pages
359 - 361
Database
ISI
SICI code
0020-1685(1997)33:4<359:DOMTAT>2.0.ZU;2-3
Abstract
The degree of dissociation and the dissociation constant of molten Tl6 SeI4, Tl5Se2Br, and Tl5Se2I were evaluated, and the most likely dissoc iation mechanism was proposed. The mixed chalcohalides were found to c rystallize in the tetragonal system (Tl6SI4: P4/mnc, a = 9.1681 Angstr om, c = 9.5954 Angstrom; Tl6SeI4: P4/mnc, a = 9.1811 Angstrom, c = 9.6 754 Angstrom; Tl5Se2Br: I4/mcm, a = 8.6083 Angstrom, c = 12.9205 Angst rom; Tl5Se2I: I4/mcm, a = 8.6685 Angstrom, c = 13.3812 Angstrom). The phase relations in the Tl6SI4-Tl6SeI4 and Tl5Se2Br-Tl5Se2I systems wer e studied, and the phase diagrams were constructed. A continuous serie s of substitutional solid solutions was found to form in both systems.