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The Missing Link in the Magnetism of Hybrid Cobalt Layered Hydroxides: The Odd-Even Effect of the Organic Spacer

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The Missing Link in the Magnetism of Hybrid Cobalt Layered Hydroxides: The Odd-Even Effect of the Organic Spacer

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dc.contributor.author	Oestreicher, Víctor
dc.contributor.author	Hunt, Diego
dc.contributor.author	Dolle, Christian
dc.contributor.author	Borovik, Paula
dc.contributor.author	Jobbágy, Matías
dc.contributor.author	Abellán Sáez, Gonzalo
dc.contributor.author	Coronado Miralles, Eugenio
dc.date.accessioned	2021-05-25T16:24:31Z
dc.date.available	2021-11-11T05:45:06Z
dc.date.issued	2021
dc.identifier.citation	Oestreicher, Víctor Hunt, Diego Dolle, Christian Borovik, Paula Jobbágy, Matías Abellán Sáez, Gonzalo Coronado Miralles, Eugenio 2021 The Missing Link in the Magnetism of Hybrid Cobalt Layered Hydroxides: The Odd-Even Effect of the Organic Spacer Chemistry-A European Journal 27 3 921 927
dc.identifier.uri	https://hdl.handle.net/10550/79410
dc.description.abstract	A dramatic change in the magnetic behaviour, which solely depends on the parity of the organic linker molecules, has been found in a family of layered Co-II hydroxides covalently functionalized with dicarboxylic molecules. These layered hybrid materials have been synthesized at room temperature using a one-pot procedure through the epoxide route. While hybrids connected by odd alkyl chains exhibit coercive fields (H-c) below ca. 3500 Oe and show spontaneous magnetization at temperatures (T-M) below 20 K, hybrids functionalized with even alkyl chains behave as hard magnets with H(c)5500 Oe and display a T-M higher than 55 K. This intriguing behaviour was studied by density functional theory with the incorporation of a Hubbard term (DFT+U) calculations, unveiling the structural subtleties underlying this observation. Indeed, the different molecular orientation exhibited by the even/odd alkyl chains, and the orientation of the covalently linked carboxylic groups modify the intensity of the magnetic coupling of both octahedral and tetrahedral in-plane sublattices, thus strongly affecting the magnetic properties of the hybrid. These findings offer an outstanding level of tuning in the molecular design of hybrid magnetic materials based on layered hydroxides.
dc.language.iso	eng
dc.relation.ispartof	Chemistry-A European Journal, 2021, vol. 27, num. 3, p. 921-927
dc.subject	Materials
dc.title	The Missing Link in the Magnetism of Hybrid Cobalt Layered Hydroxides: The Odd-Even Effect of the Organic Spacer
dc.type	journal article	es_ES
dc.date.updated	2021-05-25T16:24:32Z
dc.identifier.doi	10.1002/chem.202003593
dc.identifier.idgrec	145528
dc.rights.accessRights	open access	es_ES