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Magnetic structure and properties of centrosymmetric twisted-melilite K2CoP2O7

Sale, Matthew and Avdeev, Maxim and Mohamed, Zakiah and Ling, Chris D and Barpanda, Prabeer (2017) Magnetic structure and properties of centrosymmetric twisted-melilite K2CoP2O7. In: DALTON TRANSACTIONS, 46 (19). pp. 6409-6416.

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Official URL: http://dx.doi.org/10.1039/c7dt00978j


Twisted-melilite dipotassium cobalt pyrophosphate (K2CoP2O7, P4(2)/mnm, #136), originally reported by Gabelica-Robert (1981), was synthesized in powder form by a standard solid-state reaction route. The magnetic properties of the material were studied by magnetometry and its magnetic structure determined using neutron powder diffraction for the first time. Below T-N = 11 K, the material adopts a G-type antiferromagnetic structure with moments aligned in the ab-plane (magnetic space group Pn'nm, #58.3.473). Ab initio calculations were performed to examine the isotropic magnetic spin exchange parameters as well as the preferred direction of magnetic moments due to spin-orbit coupling. The relationship between crystal structure geometry and the strength of the magnetic interactions was examined and compared to those of melilite-type Sr2CoGe2O7.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 28 Jun 2017 06:26
Last Modified: 28 Jun 2017 06:26
URI: http://eprints.iisc.ac.in/id/eprint/57286

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