Yajima, Takeshi, Takeiri, Fumitaka, Aidzu, Kohei, Akamatsu, Hirofumi, Fujita, Koji, Yoshimune, Wataru, Lei, Shiming, Ohkura, Masatoshi, Gopalan, Venkatraman, Tanaka, Katsuhisa, and others. (2015) A labile hydride strategy for the synthesis of heavily nitridized BaTiO3. Nature Chemistry, 7 (12). pp. 1017-1023. ISSN 1755-4330. E-ISSN 1755-4349. (doi:10.1038/nchem.2370) (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) (KAR id:53338)
| 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. | |
| Official URL: http://dx.doi.org/10.1038/nchem.2370 |
Abstract
Oxynitrides have been explored extensively in the past decade because of their interesting properties, such as visible-light absorption, photocatalytic activity and high dielectric permittivity. Their synthesis typically requires high-temperature NH3 treatment (800-1,300 °C) of precursors, such as oxides, but the highly reducing conditions and the low mobility of N3- species in the lattice place significant constraints on the composition and structure-and hence the properties-of the resulting oxynitrides. Here we show a topochemical route that enables the preparation of an oxynitride at low temperatures (<500 °C), using a perovskite oxyhydride as a host. The lability of H-in BaTiO3-xHx (x � 0.6) allows H-/N3- exchange to occur, and yields a room-temperature ferroelectric BaTiO3-xN2x/3. This anion exchange is accompanied by a metal-to-insulator crossover via mixed O-H-N intermediates. These findings suggest that this 'labile hydride' strategy can be used to explore various oxynitrides, and perhaps other mixed anionic compounds. © 2015 Macmillan Publishers Limited. All rights reserved.
| Item Type: | Article |
|---|---|
| DOI/Identification number: | 10.1038/nchem.2370 |
| Additional information: | Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Nat. Chem. [Field not mapped to EPrints] AD - Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan [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 Materials Science and Engineering, Pennsylvania State University, University Park, PA, United States [Field not mapped to EPrints] AD - Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan [Field not mapped to EPrints] AD - NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, United States [Field not mapped to EPrints] AD - School of Physical Sciences, University of Kent, Canterbury, Kent, United Kingdom [Field not mapped to EPrints] AD - CREST, Japan Science and Technology Agency, 7-3-1 Hongo, Tokyo, Japan [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints] |
| Subjects: | Q Science > QD Chemistry > QD478 Solid State Chemistry |
| Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
| Depositing User: | Mark Green |
| Date Deposited: | 14 Dec 2015 09:40 UTC |
| Last Modified: | 05 Nov 2024 10:40 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/53338 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Green, M.A..
| Creator's ORCID: |
 https://orcid.org/0000-0002-7886-6205
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