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Polar ferromagnet induced by fluorine positioning in isomeric layered copper halide perovskites
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dc.contributor.author | Han, Ceng | |
dc.contributor.author | McNulty, Jason A. | |
dc.contributor.author | Bradford, Alasdair J. | |
dc.contributor.author | Slawin, Alexandra M. Z. | |
dc.contributor.author | Morrison, Finlay D. | |
dc.contributor.author | Lee, Steve | |
dc.contributor.author | Lightfoot, Philip | |
dc.date.accessioned | 2022-05-04T10:30:15Z | |
dc.date.available | 2022-05-04T10:30:15Z | |
dc.date.issued | 2022-02-21 | |
dc.identifier | 277603755 | |
dc.identifier | 54a718c6-7272-438e-b764-3033cbbe9517 | |
dc.identifier | 000765784500025 | |
dc.identifier | 85124905034 | |
dc.identifier.citation | Han , C , McNulty , J A , Bradford , A J , Slawin , A M Z , Morrison , F D , Lee , S & Lightfoot , P 2022 , ' Polar ferromagnet induced by fluorine positioning in isomeric layered copper halide perovskites ' , Inorganic Chemistry , vol. 61 , no. 7 , pp. 3230-3239 . https://doi.org/10.1021/acs.inorgchem.1c03726 | en |
dc.identifier.issn | 0020-1669 | |
dc.identifier.other | ORCID: /0000-0001-7048-3982/work/108118505 | |
dc.identifier.other | ORCID: /0000-0002-2020-3310/work/108118617 | |
dc.identifier.other | ORCID: /0000-0002-2813-3142/work/108118628 | |
dc.identifier.other | ORCID: /0000-0002-9527-6418/work/108118634 | |
dc.identifier.uri | https://hdl.handle.net/10023/25276 | |
dc.description | We acknowledge the University of St Andrews and the China Scholarship Council (studentship to CH) and the University of St Andrews (studentship to AJB). | en |
dc.description.abstract | We present the influence of positional isomerism on the crystal structure of fluorobenzylammonium copper (II) chloride perovskites A2CuCl4, by incorporating ortho, meta and para- fluorine substitution in the benzylamine structure. Two-dimensional (2D) polar ferromagnet (3-FbaH)2CuCl4 (3-FbaH+ = 3-fluorobenzylammonium) is successfully obtained, which crystallizes in a polar orthorhombic space group Pca21 at room temperature. In contrast, both (2-FbaH)2CuCl4 (2-FbaH+ = 2-fluorobenzylammonium) and (4-FbaH)2CuCl4 (4-FbaH+ = 4-fluorobenzylammonium) crystallize in centrosymmetric space groups P21/c and Pnma at room temperature, respectively, displaying significant differences in crystal structures. These differences indicate that the position of the fluorine atom is a driver for the polar behaviour in (3-FbaH)2CuCl4. Preliminary magnetic measurements confirm that these three perovskites possess dominant ferromagnetic interactions within the inorganic [CuCl4]∞ layers. Therefore, (3-FbaH)2CuCl4 is a polar ferromagnet, with potential as a type I multiferroic. This work is expected to promote further development of high performance 2D copper (II) halide perovskite multiferroic materials. | |
dc.format.extent | 3056236 | |
dc.language.iso | eng | |
dc.relation.ispartof | Inorganic Chemistry | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject.lcc | QD | en |
dc.title | Polar ferromagnet induced by fluorine positioning in isomeric layered copper halide perovskites | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.contributor.institution | University of St Andrews. Centre for Designer Quantum Materials | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1021/acs.inorgchem.1c03726 | |
dc.description.status | Peer reviewed | en |
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