ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3
Complex chalcogenides display semiconductor properties. In particular, heavy metal compounds that are formed in the Tl2Se-Sb2Se3 system are good thermoelectric materials. At the same time TlSbP2Se6 compound belongs to the family of hexaseleno-hypodiphosphates, which representatives have a number of...
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V.I.Vernadsky Institute of General and Inorganic Chemistry
2019
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oai:ojs2.1444248.nisspano.web.hosting-test.net:article-352019-07-12T10:17:48Z Interaction in quasibinary systems based on TlSbP2Se6 and compounds of the Tl2Se-Sb2Se3 system ВЗАИМОДЕЙСТВИЕ В КВАЗИБИНАРНЫХ СИСТЕМАХ НА ОСНОВЕ TlSbP2Se6 И СОЕДИНЕНИЙ СИСТЕМЫ Tl2Se–Sb2Se3 ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 Sabov, Viktoria Potorij, Мaria Kityk, Iwan Filep, Mykhailo Sabov, Marian phase diagram, quasibinary system, eutectic interaction, boundary solid solution. фазовая диаграмма, квазибинарная система, эвтектическое взаимо- действие, граничные твердые растворы. фазова діаграма, квазіподвійна система, фазові рівноваги, евтектич- на взаємодія, граничні тверді розчини. Complex chalcogenides display semiconductor properties. In particular, heavy metal compounds that are formed in the Tl2Se-Sb2Se3 system are good thermoelectric materials. At the same time TlSbP2Se6 compound belongs to the family of hexaseleno-hypodiphosphates, which representatives have a number of interesting properties (optoelectric, non-linear, etc.) in the near infrared range. The combination of these properties in one material causes some scientific and practical interest, therefore our research was aimed to study the nature of the interaction between TlSbP2Se6 and the thermally stable phases of the Tl2Se-Sb2Se3 system in order to find new promising candidate for applications in electronic devices. The alloys were prepared from corresponding binary, ternary compounds and quaternary TlSbP2Se6 by a direct one-temperature method in evacuated quartz ampoules at temperatures above the melting point of the initial and final products. The initial compounds were synthesized by the reaction of their high purity component elements in stoichiometric proportion. According to the results of the research, it was found that cross-sections based on TlSbP2Se6 and the thermally stable compounds of the Tl2Se-Sb2Se3 section are quasibinary: Sb2Se3–TlSbP2Se6 and TlSbSe2–TlSbP2Se6. Tl9SbSe6 – TlSbP2Se6 and Tl2Se - TlSbP2Se6 systems are not quasibinary, instead quasibinary sections Tl2Se-Tl4P2Se6 and Tl9SbSe6-Tl4P2Se6 which crossing their. The phase equilibrium in Sb2Se3 – TlSbP2Se6 and TlSbSe2 – TlSbP2Se6 systems were studied by common differential thermal analysis (DTA), X-ray powder diffraction (XRD) and microstructure analysis. The eutectic interactions are observed in both systems. The invariant points coordinates are: 77 mol.% TlSbP2Se6, 709 K (system Sb2Se3 – TlSbP2Se6) and 45 mol.% TISbSe2, 680 K (system TlSbSe2 – TlSbP2Se6). Significant boundary solid solutions are formed on the basis of the quaternary compound. Their region extends up to 10 mol% in the system Sb2Se3 – TlSbP2Se6 and to about 18 mol.% in the system TlSbSe2 –TlSbP2Se6 at annealing temperature (573 К). Near the Sb2Se3 and TlSbSe2, the solubility limits do not exceed several mol.%. V.I.Vernadsky Institute of General and Inorganic Chemistry 2019-06-07 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/35 10.33609/0041-6045.85.3.2019.20-26 Ukrainian Chemistry Journal; Vol. 85 No. 3 (2019): Ukrainian Chemistry Journal; 20-26 Украинский химический журнал; Том 85 № 3 (2019): Украинский химический журнал; 20-26 Український хімічний журнал; Том 85 № 3 (2019): Український хімічний журнал; 20-26 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/35/17 |
| institution |
Ukrainian Chemistry Journal |
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| datestamp_date |
2019-07-12T10:17:48Z |
| collection |
OJS |
| language |
English |
| topic |
фазова діаграма квазіподвійна система фазові рівноваги евтектич- на взаємодія граничні тверді розчини. |
| spellingShingle |
фазова діаграма квазіподвійна система фазові рівноваги евтектич- на взаємодія граничні тверді розчини. Sabov, Viktoria Potorij, Мaria Kityk, Iwan Filep, Mykhailo Sabov, Marian ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 |
| topic_facet |
phase diagram quasibinary system eutectic interaction boundary solid solution. фазовая диаграмма квазибинарная система эвтектическое взаимо- действие граничные твердые растворы. фазова діаграма квазіподвійна система фазові рівноваги евтектич- на взаємодія граничні тверді розчини. |
| format |
Article |
| author |
Sabov, Viktoria Potorij, Мaria Kityk, Iwan Filep, Mykhailo Sabov, Marian |
| author_facet |
Sabov, Viktoria Potorij, Мaria Kityk, Iwan Filep, Mykhailo Sabov, Marian |
| author_sort |
Sabov, Viktoria |
| title |
ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 |
| title_short |
ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 |
| title_full |
ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 |
| title_fullStr |
ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 |
| title_full_unstemmed |
ВЗАЄМОДІЯ У КВАЗІПОДВІЙНИХ СИСТЕМАХ НА ОСНОВІ TlSbP2Se6 ТА СПОЛУК СИСТЕМИ Tl2Se–Sb2Se3 |
| title_sort |
взаємодія у квазіподвійних системах на основі tlsbp2se6 та сполук системи tl2se–sb2se3 |
| title_alt |
Interaction in quasibinary systems based on TlSbP2Se6 and compounds of the Tl2Se-Sb2Se3 system ВЗАИМОДЕЙСТВИЕ В КВАЗИБИНАРНЫХ СИСТЕМАХ НА ОСНОВЕ TlSbP2Se6 И СОЕДИНЕНИЙ СИСТЕМЫ Tl2Se–Sb2Se3 |
| description |
Complex chalcogenides display semiconductor properties. In particular, heavy metal compounds that are formed in the Tl2Se-Sb2Se3 system are good thermoelectric materials. At the same time TlSbP2Se6 compound belongs to the family of hexaseleno-hypodiphosphates, which representatives have a number of interesting properties (optoelectric, non-linear, etc.) in the near infrared range. The combination of these properties in one material causes some scientific and practical interest, therefore our research was aimed to study the nature of the interaction between TlSbP2Se6 and the thermally stable phases of the Tl2Se-Sb2Se3 system in order to find new promising candidate for applications in electronic devices.
The alloys were prepared from corresponding binary, ternary compounds and quaternary TlSbP2Se6 by a direct one-temperature method in evacuated quartz ampoules at temperatures above the melting point of the initial and final products. The initial compounds were synthesized by the reaction of their high purity component elements in stoichiometric proportion.
According to the results of the research, it was found that cross-sections based on TlSbP2Se6 and the thermally stable compounds of the Tl2Se-Sb2Se3 section are quasibinary: Sb2Se3–TlSbP2Se6 and TlSbSe2–TlSbP2Se6. Tl9SbSe6 – TlSbP2Se6 and Tl2Se - TlSbP2Se6 systems are not quasibinary, instead quasibinary sections Tl2Se-Tl4P2Se6 and Tl9SbSe6-Tl4P2Se6 which crossing their.
The phase equilibrium in Sb2Se3 – TlSbP2Se6 and TlSbSe2 – TlSbP2Se6 systems were studied by common differential thermal analysis (DTA), X-ray powder diffraction (XRD) and microstructure analysis. The eutectic interactions are observed in both systems. The invariant points coordinates are: 77 mol.% TlSbP2Se6, 709 K (system Sb2Se3 – TlSbP2Se6) and 45 mol.% TISbSe2, 680 K (system TlSbSe2 – TlSbP2Se6). Significant boundary solid solutions are formed on the basis of the quaternary compound. Their region extends up to 10 mol% in the system Sb2Se3 – TlSbP2Se6 and to about 18 mol.% in the system TlSbSe2 –TlSbP2Se6 at annealing temperature (573 К). Near the Sb2Se3 and TlSbSe2, the solubility limits do not exceed several mol.%. |
| publisher |
V.I.Vernadsky Institute of General and Inorganic Chemistry |
| publishDate |
2019 |
| url |
https://ucj.org.ua/index.php/journal/article/view/35 |
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