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

Ovsyannikov, S. V., Bykov, M., Medvedev, S. A., Naumov, P. G., Jesche, A., Tsirlin, A. A., et al. (2020). A Room-Temperature Verwey-type Transition in Iron Oxide, Fe5O6. Angewandte Chemie, International Edition, 59, 5632 -5636. doi:10.1002/anie.201914988.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-A1EC-B Version Permalink: http://hdl.handle.net/21.11116/0000-0006-4EE4-2
Genre: Journal Article

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 Creators:
Ovsyannikov, Sergey V.1, Author
Bykov, Maxim1, Author
Medvedev, Sergey A.2, Author              
Naumov, Pavel G.3, Author              
Jesche, Anton1, Author
Tsirlin, Alexander A.1, Author
Bykova, Elena1, Author
Chuvashova, Irina1, Author
Karkin, Alexander E.1, Author
Dyadkin, Vadim1, Author
Chernyshov, Dmitry1, Author
Dubrovinsky, Leonid S.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Sergiy Medvediev, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863438              
3Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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Free keywords: charge ordering, high pressure, iron oxides, transition metal oxide, Verwey transition, Bond strength (chemical), Metal insulator transition, Physicochemical properties, Transition metal oxides, Transition metals, Vanadium dioxide, Charge ordering, Charge ordering phenomena, Charge ordering transition, High pressure, Nanoelectronic devices, Near room temperature, Standard conditions, Verwey transitions, Iron oxides
 Abstract: 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. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

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Language(s): eng - English
 Dates: 2020-02-022020-02-02
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1002/anie.201914988
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Title: Angewandte Chemie, International Edition
  Abbreviation : Angew. Chem., Int. Ed.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 59 Sequence Number: - Start / End Page: 5632 - 5636 Identifier: ISSN: 1433-7851
CoNE: https://pure.mpg.de/cone/journals/resource/1433-7851