Electronic origin of negative thermal expansion in V2OPO4

Elise Pachoud, James Cumby, Jonathan P. Wright, Branimir Raguž, Robert Glaum, Paul Attfield

Research output: Contribution to journalArticlepeer-review


Negative volume expansion between 620 and 800 K in V2OPO4 is discovered to be of electronic origin due to the charge ordering transition at 605 K. Domain reorientation and coexistence of the low and high temperature phases close to the transition are observed in X-ray diffraction data from single crystals grown by chemical vapour transport.
Original languageEnglish
JournalChemical Communications
Early online date30 Apr 2020
Publication statusE-pub ahead of print - 30 Apr 2020

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