Cobalt adipate, Co(C6H8O4): antiferromagnetic structure, unusual thermal expansion and magnetoelastic coupling

Saines, Paul J. and Barton, Phillip T. and Jura, Marek and Knight, Kevin S. and Cheetham, Anthony K. (2014) Cobalt adipate, Co(C6H8O4): antiferromagnetic structure, unusual thermal expansion and magnetoelastic coupling. Materials Horizons, 1 (3). pp. 332-337. ISSN 2051-6347. (doi:https://doi.org/10.1039/C4MH00009A) (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)

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Official URL
http://doi.org/10.1039/C4MH00009A

Abstract

Co adipate, Co(C6H8O4), has been found to order near 10 K into a magnetic structure featuring sheets of tetrahedral Co cations coupled antiferromagnetically in two dimensions through carboxylate groups. The emergence of this order is accompanied by magnetoelastic coupling, which drives anisotropic negative thermal expansion along the a-axis below 50 K, the first time such behaviour has been observed in a metal-organic framework. The monoclinic angle, beta, has also been found to decrease on cooling, passing through a metrically orthorhombic phase without a phase transition; this unusual behaviour has been rationalised in terms of the thermal expansion along the principal axes.

Item Type: Article
Uncontrolled keywords: INORGANIC-ORGANIC FRAMEWORKS; COORDINATION POLYMER; MAGNETIC-PROPERTIES; DICARBOXYLATE LIGANDS; NANOSHEET EXFOLIATION; NEUTRON-DIFFRACTION; DIVERSITY
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Paul Saines
Date Deposited: 07 Oct 2015 10:36 UTC
Last Modified: 07 Oct 2015 10:36 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50800 (The current URI for this page, for reference purposes)
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