Interlayer Communication in Aurivillius Vanadate to Enable Defect Structures and Charge Ordering

Zhang, Yaoqing and Yamamoto, Takafumi and Green, M.A. and Kageyama, Hiroshi and Ueda, Yukata (2015) Interlayer Communication in Aurivillius Vanadate to Enable Defect Structures and Charge Ordering. Inorganic Chemistry, 54 (22). pp. 10925-10933. ISSN 0020-1669. E-ISSN 1520-510X. (doi:https://doi.org/10.1021/acs.inorgchem.5b01964) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1021/acs.inorgchem.5b01964

Abstract

The fluorite-like [Bi2O2]2+ layer is a fundamental building unit in a great variety of layered compounds. Here in this contribution, we presented a comprehensive study on an unusual Aurivillius phase Bi3.6V2O10 with respect to its defect chemistry and polymorphism control as well as implications for fast oxide ion transport at lower temperatures. The bismuth oxide layer in Bi4V2O11 is found to tolerate a large number of Bi vacancies without breaking the high temperature prototype I4/mmm structure (γ-phase). On cooling, an orthorhombic distortion occurs to the γ-phase, giving rise to a different type of phase (B-phase) in the intermediate temperature region. Cooling to room temperature causes a further transition to an oxygen-vacancy ordered A-phase, which is accompanied by the charge ordering of V4+ and V5+ cations, providing magnetic (d1) and nonmagnetic (d0) chains along the a axis. This is a novel charge ordering transition in terms of the concomitant change of oxygen coordination. Interestingly, upon quenching, both the γ- and B-phase can be kinetically trapped, enabling the structural probing of the two phases at ambient temperature. Driven by the thermodynamic forces, the oxide anion in the γ-phase undergoes an interlayer diffusion process to reshuffle the compositions of both Bi-O and V-O layers. © 2015 American Chemical Society.

Item Type: Article
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Inorg. Chem. [Field not mapped to EPrints] AD - Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan [Field not mapped to EPrints] AD - Department of Energy and Hydrocarbon Chemistry, Kyoto University, Kyoto, Japan [Field not mapped to EPrints] AD - National Institute of Standards and Technology, GaithersburgMD, United States [Field not mapped to EPrints] AD - Toyota Physical and Chemical Research Institute, Nagakute, Aichi, Japan [Field not mapped to EPrints] AD - Materials Research Center for Element Strategy, Tokyo Institute of Technology, Yokohama, Japan [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 14 Dec 2015 09:44 UTC
Last Modified: 25 Aug 2017 11:25 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/53339 (The current URI for this page, for reference purposes)
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