Henrichs, L, Cespedes, O, Bennett, J et al. (10 more authors) (2016) Multiferroic clusters: a new perspective for relaxor-type room-temperature multiferroics. Advanced Functional Materials, 26 (13). pp. 2111-2121. ISSN 1616-301X
Abstract
Multiferroics are promising for sensor and memory applications, but despite all efforts invested in their research no single-phase material displaying both ferroelectricity and large magnetization at room-temperature has hitherto been reported. This situation has substantially been improved in the novel relaxor ferroelectric single-phase (BiFe0.9Co0.1O3)0.4-(Bi1/2K1/2TiO3)0.6, where polar nanoregions (PNR) transform into static-PNR (SPNR) as evidenced by piezoresponse force microscopy (PFM) and simultaneously enable congruent multiferroic clusters (MFC) to emerge from inherent strongly magnetic Bi(Fe,Co)O3 rich regions as verified by magnetic force microscopy (MFM) and secondary ion mass spectrometry (SIMS). The material’s exceptionally large Néel temperature TN = 670 ± 10 K, as found by neutron diffraction, is proposed to be a consequence of ferrimagnetic order in MFC. On these MFC, exceptionally large direct and converse magnetoelectric coupling coefficients, α ≈ 1.0 x 10-5 s/m at room-temperature, were measured by PFM and MFM respectively. We expect the non-ergodic relaxor properties which are governed by the Bi1/2K1/2TiO3 component to play a vital role in the strong ME coupling, by providing an electrically and mechanically flexible environment to MFC. This new class of non-ergodic relaxor multiferroics bears great potential for applications. Especially the prospect of a ME nanodot storage device seems appealing.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: "Henrichs, L, Cespedes, O, Bennett, J, Landers, J, Salamon, S, Heuser, C, Hansen, T, Helbig, T, Gutfleisch, O, Lupascu, D, Wende, H, Kleeman, W and Bell, AJ (2016) Multiferroic clusters: a new perspective for relaxor-type room-temperature multiferroics. Advanced Functional Materials, 26 (13). pp. 2111-2121", which has been published in final form at http://dx.doi.org/10.1002/adfm.201503335. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
Keywords: | multiferroics, magnetoelectric, piezoresponse force microscopy, magnetic force microscopy, multiferroic cluster |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number EU - European Union 290158 |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Feb 2016 11:29 |
Last Modified: | 14 Apr 2017 03:55 |
Published Version: | http://dx.doi.org/10.1002/adfm.201503335 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/adfm.201503335 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:94549 |