Effect of temperature and pressure on mixed oxide solid solutions

M. Yu Petrushina; E. S. Dedova; K. V. Yusenko; A. S. Portnyagin; E. K. Papynov; E. Yu Filatov; S. V. Korenev; A. I. Gubanov

doi:10.1016/j.inoche.2020.107965

Effect of temperature and pressure on mixed oxide solid solutions

M. Yu Petrushina, E. S. Dedova, K. V. Yusenko, A. S. Portnyagin, E. K. Papynov, E. Yu Filatov, S. V. Korenev, A. I. Gubanov

Research output: Contribution to journal › Article › peer-review

Abstract

A hydrothermal synthesis of ZrW_2-xMo_xO₈ (0 ≤ x ≤ 2) from the corresponding precursors is reported in this paper. High-temperature and high-pressure data are presented for the sample with x = 1.6. An increase in temperature initiates the phase transition from tetragonal precursor to orthorhombic-ZrW_2-xMo_xO₈ (x = 1.6) with the subsequent formation of cubic and trigonal phases. The thermolysis parameter of the disordered cubic ZrW_2-xMo_xO₈ (x = 1.6) phase is 803 K, and the coefficient of thermal expansion is α = -4.6∙10^–6 K⁻¹. Data on ZrW_2-xMo_xO₈ (x = 1.6) structure as a function of pressure are obtained for the first time. Pressure-induced changes from cubic to orthorhombic ZrW_2-xMo_xO₈ (x = 1.6) phase at 1.38 GPa are observed. The sample amorphization is irreversible during decompression.

Original language	English
Article number	107965
Number of pages	4
Journal	Inorganic Chemistry Communications
Volume	117
DOIs	https://doi.org/10.1016/j.inoche.2020.107965
Publication status	Published - Jul 2020

Keywords

NEGATIVE THERMAL-EXPANSION
ZRW2O8
COMPRESSIBILITY
TRANSITIONS

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10.1016/j.inoche.2020.107965

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@article{689d26ebaf0b4c15a5ee3964870f8ba2,

title = "Effect of temperature and pressure on mixed oxide solid solutions",

abstract = "A hydrothermal synthesis of ZrW2-xMoxO8 (0 ≤ x ≤ 2) from the corresponding precursors is reported in this paper. High-temperature and high-pressure data are presented for the sample with x = 1.6. An increase in temperature initiates the phase transition from tetragonal precursor to orthorhombic-ZrW2-xMoxO8 (x = 1.6) with the subsequent formation of cubic and trigonal phases. The thermolysis parameter of the disordered cubic ZrW2-xMoxO8 (x = 1.6) phase is 803 K, and the coefficient of thermal expansion is α = -4.6∙10–6 K−1. Data on ZrW2-xMoxO8 (x = 1.6) structure as a function of pressure are obtained for the first time. Pressure-induced changes from cubic to orthorhombic ZrW2-xMoxO8 (x = 1.6) phase at 1.38 GPa are observed. The sample amorphization is irreversible during decompression.",

keywords = "NEGATIVE THERMAL-EXPANSION, ZRW2O8, COMPRESSIBILITY, TRANSITIONS",

author = "Petrushina, {M. Yu} and Dedova, {E. S.} and Yusenko, {K. V.} and Portnyagin, {A. S.} and Papynov, {E. K.} and Filatov, {E. Yu} and Korenev, {S. V.} and Gubanov, {A. I.}",

year = "2020",

month = jul,

doi = "10.1016/j.inoche.2020.107965",

language = "English",

volume = "117",

journal = "Inorganic Chemistry Communication",

issn = "1387-7003",

publisher = "Elsevier",

}

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T1 - Effect of temperature and pressure on mixed oxide solid solutions

AU - Petrushina, M. Yu

AU - Dedova, E. S.

AU - Yusenko, K. V.

AU - Portnyagin, A. S.

AU - Papynov, E. K.

AU - Filatov, E. Yu

AU - Korenev, S. V.

AU - Gubanov, A. I.

PY - 2020/7

Y1 - 2020/7

N2 - A hydrothermal synthesis of ZrW2-xMoxO8 (0 ≤ x ≤ 2) from the corresponding precursors is reported in this paper. High-temperature and high-pressure data are presented for the sample with x = 1.6. An increase in temperature initiates the phase transition from tetragonal precursor to orthorhombic-ZrW2-xMoxO8 (x = 1.6) with the subsequent formation of cubic and trigonal phases. The thermolysis parameter of the disordered cubic ZrW2-xMoxO8 (x = 1.6) phase is 803 K, and the coefficient of thermal expansion is α = -4.6∙10–6 K−1. Data on ZrW2-xMoxO8 (x = 1.6) structure as a function of pressure are obtained for the first time. Pressure-induced changes from cubic to orthorhombic ZrW2-xMoxO8 (x = 1.6) phase at 1.38 GPa are observed. The sample amorphization is irreversible during decompression.

AB - A hydrothermal synthesis of ZrW2-xMoxO8 (0 ≤ x ≤ 2) from the corresponding precursors is reported in this paper. High-temperature and high-pressure data are presented for the sample with x = 1.6. An increase in temperature initiates the phase transition from tetragonal precursor to orthorhombic-ZrW2-xMoxO8 (x = 1.6) with the subsequent formation of cubic and trigonal phases. The thermolysis parameter of the disordered cubic ZrW2-xMoxO8 (x = 1.6) phase is 803 K, and the coefficient of thermal expansion is α = -4.6∙10–6 K−1. Data on ZrW2-xMoxO8 (x = 1.6) structure as a function of pressure are obtained for the first time. Pressure-induced changes from cubic to orthorhombic ZrW2-xMoxO8 (x = 1.6) phase at 1.38 GPa are observed. The sample amorphization is irreversible during decompression.

KW - NEGATIVE THERMAL-EXPANSION

KW - ZRW2O8

KW - COMPRESSIBILITY

KW - TRANSITIONS

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DO - 10.1016/j.inoche.2020.107965

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