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Multiferroicity and hydrogen-bond ordering in (C2H5NH3)2CuCl4 featuring dominant ferromagnetic interactions

Multiferroicity and hydrogen-bond ordering in (C2H5NH3)2CuCl4 featuring dominant ferromagnetic interactions
Multiferroicity and hydrogen-bond ordering in (C2H5NH3)2CuCl4 featuring dominant ferromagnetic interactions
We demonstrate that ethylammonium copper chloride, (C2H5NH3)2CuCl4, a member of the hybrid perovskite family is an electrically polar and magnetic compound with dielectric anomaly around the Curie point (247 K). We have found large spontaneous electric polarization below this point accompanied with a color change in the sample. The system is also ferroelectric, with large remnant polarization (37??C/cm2) that is comparable to classical ferroelectric compounds. The results are ascribed to hydrogen-bond ordering of the organic chains. The coexistence of ferroelectricity and dominant ferromagnetic interactions allows to relate the sample to a rare group of magnetic multiferroic compounds. In such hybrid perovskites the underlying hydrogen bonding of easily tunable organic building blocks in combination with the 3d transition-metal layers offers an emerging pathway to engineer multifuctional multiferroics.
1550-235X
1-6
Kundys, B.
232c3004-e185-4d49-bfea-5ce652704e23
Lappas, A.
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Viret, M.
587e5a76-41a7-49e3-9071-ae0249ac5eae
Kapustianyk, V.
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Rudyk, V.
e00cbd99-53f0-4132-ba24-3012b1b7f6d8
Semak, S.
a77ed6da-7d7e-4de1-8c1c-b64f8e721b3d
Simon, Ch.
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Bakaimi, I.
3c4e7000-517c-41fa-84db-c45641125e4d
Kundys, B.
232c3004-e185-4d49-bfea-5ce652704e23
Lappas, A.
b6f8e9ca-82df-40e0-9b15-b447391323d6
Viret, M.
587e5a76-41a7-49e3-9071-ae0249ac5eae
Kapustianyk, V.
770dc3c7-7312-4938-a0d2-a615c5666095
Rudyk, V.
e00cbd99-53f0-4132-ba24-3012b1b7f6d8
Semak, S.
a77ed6da-7d7e-4de1-8c1c-b64f8e721b3d
Simon, Ch.
fb5424e5-ac3c-4161-8493-91916b801754
Bakaimi, I.
3c4e7000-517c-41fa-84db-c45641125e4d

Kundys, B., Lappas, A., Viret, M., Kapustianyk, V., Rudyk, V., Semak, S., Simon, Ch. and Bakaimi, I. (2010) Multiferroicity and hydrogen-bond ordering in (C2H5NH3)2CuCl4 featuring dominant ferromagnetic interactions. Physical Review B, 81 (224434), 1-6. (doi:10.1103/PhysRevB.81.224434).

Record type: Article

Abstract

We demonstrate that ethylammonium copper chloride, (C2H5NH3)2CuCl4, a member of the hybrid perovskite family is an electrically polar and magnetic compound with dielectric anomaly around the Curie point (247 K). We have found large spontaneous electric polarization below this point accompanied with a color change in the sample. The system is also ferroelectric, with large remnant polarization (37??C/cm2) that is comparable to classical ferroelectric compounds. The results are ascribed to hydrogen-bond ordering of the organic chains. The coexistence of ferroelectricity and dominant ferromagnetic interactions allows to relate the sample to a rare group of magnetic multiferroic compounds. In such hybrid perovskites the underlying hydrogen bonding of easily tunable organic building blocks in combination with the 3d transition-metal layers offers an emerging pathway to engineer multifuctional multiferroics.

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Published date: 29 June 2010
Organisations: Chemistry

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Local EPrints ID: 403343
URI: https://eprints.soton.ac.uk/id/eprint/403343
ISSN: 1550-235X
PURE UUID: 6342e238-e1de-4e15-b160-efde98d8be7c
ORCID for I. Bakaimi: ORCID iD orcid.org/0000-0002-8083-4413

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Date deposited: 02 Dec 2016 15:03
Last modified: 26 Nov 2019 01:27

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Contributors

Author: B. Kundys
Author: A. Lappas
Author: M. Viret
Author: V. Kapustianyk
Author: V. Rudyk
Author: S. Semak
Author: Ch. Simon
Author: I. Bakaimi ORCID iD

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