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A new class of ferromagnetic semiconductor: Copper molybdate organic-inorganic compound with phenanthroline organic linkers

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journal contribution
posted on 03.03.2021, 22:05 by Islah-u-din, Shen Chong, GB Jameson, SG Raymond, G Lee, IK Park, X Wang, MR Waterland, Jeffery Tallon
© 2020 Elsevier B.V. A three-dimensional (3D) framework of covalently-bonded layers of bimetallic inorganic oxide, CuMoO4, interlinked by electron-rich organic ligands, which is semiconducting and also ferromagnetic, has been prepared. The structure [Cu(3,8-phenanthroline)0.5MoO4] consists of molybdate tetrahedra corner-shared with clusters of edge-sharing {CuO5N} octahedra. The injection of charge carriers into the inorganic layers by phenanthroline induces different magnetic orderings at different temperatures, orderings which are not found in the structurally-similar [Cu(4,4ʹ-bipyridine)0.5MoO4]. The temperature dependence of the susceptibility shows two low temperature magnetic transitions: weakly ferromagnetic-coupled spins below 15 K coexisting with an antiferromagnetic structure below 10 K. Specific heat capacity shows a finite ground-state electronic specific heat coefficient, γ = 0.094 J/mol·K2, that is higher than that of the bipyridine counterpart (0.068 J/mol·K2), confirming an increase in the electronic density-of-states in the phenanthroline system.

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Preferred citation

Islah-u-din, , Chong, S. V., Jameson, G. B., Raymond, S. G., Lee, G., Park, I. K., Wang, X., Waterland, M. R. & Tallon, J. L. (2020). A new class of ferromagnetic semiconductor: Copper molybdate organic-inorganic compound with phenanthroline organic linkers. Journal of Magnetism and Magnetic Materials, 508, 166881-166881. https://doi.org/10.1016/j.jmmm.2020.166881

Journal title

Journal of Magnetism and Magnetic Materials

Volume

508

Publication date

15/08/2020

Pagination

166881-166881

Publisher

Elsevier BV

Publication status

Published

ISSN

0304-8853

Article number

166881

Language

en

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