Orthorhombisches In<sub>2</sub>O<sub>3</sub> – ein metastabiles Indiumsesquioxid‐ Polymorph

Functional oxides whose physicochemical properties may be reversibly changed at standard conditions are potential candidates for the use in next‐generation nanoelectronic devices. To date, vanadium dioxide (VO2) is the only known simple transition‐metal oxide that demonstrates a near‐room‐temperature metal–insulator transition that may be used in such appliances. In this work, we synthesized and investigated the crystals of a novel mixed‐valent iron oxide with an unconventional Fe5O6 stoichiometry. Near 275 K, Fe5O6 undergoes a Verwey‐type charge‐ordering transition that is concurrent with a dimerization in the iron chains and a following formation of new Fe−Fe chemical bonds. This unique feature highlights Fe5O6 as a promising candidate for the use in innovative applications. We established that the minimal Fe−Fe distance in the octahedral chains is a key parameter that determines the type and temperature of charge ordering. This model provides new insights into charge‐ordering phenomena in transition‐metal oxides in general.

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A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

Ovsyannikov

Bykov

Medvedev

et al. 2020

Angewandte Chemie

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A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

et al. 2020

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Orthorhombisches In₂O₃ – ein metastabiles Indiumsesquioxid‐ Polymorph

Cited by 2 publications

References 33 publications

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

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Orthorhombisches In2O3 – ein metastabiles Indiumsesquioxid‐ Polymorph

Cited by 2 publications

References 33 publications

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe5O6

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe5O6

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe5O6

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Orthorhombisches In₂O₃ – ein metastabiles Indiumsesquioxid‐ Polymorph

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆

A Room‐Temperature Verwey‐type Transition in Iron Oxide, Fe₅O₆