The influence of Zn2+ ions on the local structure and thermochromic properties of Cu1-xZnxMoO4 solid solutions

Inga Pudža; Andris Anspoks; Arturs Cintiņš; Aleksandrs Kaļinko; Edmund Welter; Aleksejs Kuzmins

doi:10.1016/j.mtcomm.2021.102607

The influence of Zn²⁺ ions on the local structure and thermochromic properties of Cu1-xZnxMoO4 solid solutions

Inga Pudža^*
, Andris Anspoks
, Arturs Cintiņš
, Aleksandrs Kaļinko
, Edmund Welter
, Aleksejs Kuzmins

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

The influence of zinc ions on the thermochromic properties of polycrystalline Cu_1−xZn_xMoO₄ (x=0.10, 0.50, 0.90) solid solutions was studied by X-ray absorption spectroscopy at the Cu, Zn and Mo K-edges. Detailed structural information on the local environment of metal ions was obtained from the simultaneous analysis of EXAFS spectra measured at three metal absorption edges using the reverse Monte Carlo method. Thermochromic phase transition with the hysteretic behaviour between α and γ phases was observed in Cu_0.90Zn_0.10MoO₄ solid solution. It was found that the local environment of molybdenum ions is most susceptible to the substitution of copper for zinc and, upon cooling, transforms from tetrahedral MoO₄ to distorted octahedral MoO₆.

Original language	English
Article number	102607
Journal	Materials Today Communications
Volume	28
DOIs	https://doi.org/10.1016/j.mtcomm.2021.102607
Publication status	Published - Sept 2021

Keywords

Cu Zn MoO
EXAFS
Solid solutions
Thermochromism
XANES

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10.1016/j.mtcomm.2021.102607

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@article{9b2f2bd7c36b44409abf61d639b699ae,

title = "The influence of Zn2+ ions on the local structure and thermochromic properties of Cu1-xZnxMoO4 solid solutions",

abstract = "The influence of zinc ions on the thermochromic properties of polycrystalline Cu1−xZnxMoO4 (x=0.10, 0.50, 0.90) solid solutions was studied by X-ray absorption spectroscopy at the Cu, Zn and Mo K-edges. Detailed structural information on the local environment of metal ions was obtained from the simultaneous analysis of EXAFS spectra measured at three metal absorption edges using the reverse Monte Carlo method. Thermochromic phase transition with the hysteretic behaviour between α and γ phases was observed in Cu0.90Zn0.10MoO4 solid solution. It was found that the local environment of molybdenum ions is most susceptible to the substitution of copper for zinc and, upon cooling, transforms from tetrahedral MoO4 to distorted octahedral MoO6.",

keywords = "Cu Zn MoO, EXAFS, Solid solutions, Thermochromism, XANES",

author = "Inga Pud{\v z}a and Andris Anspoks and Arturs Cintiņ{\v s} and Aleksandrs Kaļinko and Edmund Welter and Aleksejs Kuzmins",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = sep,

doi = "10.1016/j.mtcomm.2021.102607",

language = "English",

volume = "28",

journal = "Materials Today Communications",

issn = "2352-4928",

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TY - JOUR

T1 - The influence of Zn2+ ions on the local structure and thermochromic properties of Cu1-xZnxMoO4 solid solutions

AU - Pudža, Inga

AU - Anspoks, Andris

AU - Cintiņš, Arturs

AU - Kaļinko, Aleksandrs

AU - Welter, Edmund

AU - Kuzmins, Aleksejs

PY - 2021/9

Y1 - 2021/9

N2 - The influence of zinc ions on the thermochromic properties of polycrystalline Cu1−xZnxMoO4 (x=0.10, 0.50, 0.90) solid solutions was studied by X-ray absorption spectroscopy at the Cu, Zn and Mo K-edges. Detailed structural information on the local environment of metal ions was obtained from the simultaneous analysis of EXAFS spectra measured at three metal absorption edges using the reverse Monte Carlo method. Thermochromic phase transition with the hysteretic behaviour between α and γ phases was observed in Cu0.90Zn0.10MoO4 solid solution. It was found that the local environment of molybdenum ions is most susceptible to the substitution of copper for zinc and, upon cooling, transforms from tetrahedral MoO4 to distorted octahedral MoO6.

AB - The influence of zinc ions on the thermochromic properties of polycrystalline Cu1−xZnxMoO4 (x=0.10, 0.50, 0.90) solid solutions was studied by X-ray absorption spectroscopy at the Cu, Zn and Mo K-edges. Detailed structural information on the local environment of metal ions was obtained from the simultaneous analysis of EXAFS spectra measured at three metal absorption edges using the reverse Monte Carlo method. Thermochromic phase transition with the hysteretic behaviour between α and γ phases was observed in Cu0.90Zn0.10MoO4 solid solution. It was found that the local environment of molybdenum ions is most susceptible to the substitution of copper for zinc and, upon cooling, transforms from tetrahedral MoO4 to distorted octahedral MoO6.

KW - Cu Zn MoO

KW - EXAFS

KW - Solid solutions

KW - Thermochromism

KW - XANES

UR - https://www.sciencedirect.com/science/article/abs/pii/S2352492821005997?via%253Dihub

UR - https://www.scopus.com/pages/publications/85109069567

U2 - 10.1016/j.mtcomm.2021.102607

DO - 10.1016/j.mtcomm.2021.102607

M3 - Article

SN - 2352-4928

VL - 28

JO - Materials Today Communications

JF - Materials Today Communications

M1 - 102607

ER -

The influence of Zn²⁺ ions on the local structure and thermochromic properties of Cu1-xZnxMoO4 solid solutions

Abstract

Keywords

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