Structure and Anharmonicity of α- and β-Sb2O3 at Low Temperature

Moseley, Duncan H.; Bridges, Craig A.; Daemen, Luke L.; Zhang, Qiang; McGuire, Michael A.; Cakmak, Ercan; Hermann, Raphaël P.

doi:10.3390/cryst13050752

Open AccessEditor’s ChoiceArticle

Structure and Anharmonicity of α- and β-Sb₂O₃ at Low Temperature

by

Duncan H. Moseley

¹

,

Craig A. Bridges

¹

,

Luke L. Daemen

²,

Qiang Zhang

²

,

Michael A. McGuire

¹

,

Ercan Cakmak

¹

and

Raphaël P. Hermann

^1,*

¹

Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

²

Neutron Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

^*

Author to whom correspondence should be addressed.

Crystals 2023, 13(5), 752; https://doi.org/10.3390/cryst13050752

Submission received: 14 March 2023 / Revised: 19 April 2023 / Accepted: 26 April 2023 / Published: 1 May 2023

(This article belongs to the Special Issue Recent Developments of Inorganic Crystalline Materials)

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Abstract

Antimony oxides are important materials for catalysis and flame-retardant applications. The two most common phases,

α

-Sb₂O₃ (senarmontite) and

β

-Sb₂O₃ (valentinite), have been studied extensively. Specific focus has been placed recently on their lattice dynamics properties and how they relate to the

α

-

β

phase transformation and their potential anharmonicity. However, there has not been any direct investigation of anharmonicity in these systems, and a surprising lack of low-temperature structural information has prevented further study. Here, we report the powder neutron diffraction data of both phases of Sb₂O₃, as well as structural information.

α

-Sb₂O₃ behaved as expected, but

β

-Sb₂O₃ revealed a small region of zero thermal expansion along the c axis. Additionally, while the

β

phase matched well with reported atomic displacement parameters, the

α

phase displayed a marked deviation. This data will enable further investigations into these systems.

Keywords: mixed valence; powder diffraction; anharmonicity; low temperature

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MDPI and ACS Style

Moseley, D.H.; Bridges, C.A.; Daemen, L.L.; Zhang, Q.; McGuire, M.A.; Cakmak, E.; Hermann, R.P. Structure and Anharmonicity of α- and β-Sb₂O₃ at Low Temperature. Crystals 2023, 13, 752. https://doi.org/10.3390/cryst13050752

AMA Style

Moseley DH, Bridges CA, Daemen LL, Zhang Q, McGuire MA, Cakmak E, Hermann RP. Structure and Anharmonicity of α- and β-Sb₂O₃ at Low Temperature. Crystals. 2023; 13(5):752. https://doi.org/10.3390/cryst13050752

Chicago/Turabian Style

Moseley, Duncan H., Craig A. Bridges, Luke L. Daemen, Qiang Zhang, Michael A. McGuire, Ercan Cakmak, and Raphaël P. Hermann. 2023. "Structure and Anharmonicity of α- and β-Sb₂O₃ at Low Temperature" Crystals 13, no. 5: 752. https://doi.org/10.3390/cryst13050752

APA Style

Moseley, D. H., Bridges, C. A., Daemen, L. L., Zhang, Q., McGuire, M. A., Cakmak, E., & Hermann, R. P. (2023). Structure and Anharmonicity of α- and β-Sb₂O₃ at Low Temperature. Crystals, 13(5), 752. https://doi.org/10.3390/cryst13050752

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Structure and Anharmonicity of α- and β-Sb₂O₃ at Low Temperature

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