期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 508, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2020.166881
关键词
Magnetic properties; Layered compounds; Organic-inorganic hybrids; Doping; Polycyclic aromatic hydrocarbons
资金
- Marsden Fund of New Zealand [IRL0501]
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- Higher Education Commission, Pakistan
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)(0.5)MoO4] 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 structurallysimilar [Cu(4,4'-bipyridine)(0.5)MoO4]. The temperature dependence of the susceptibility shows two low temperature magnetic transitions: weakly ferromagnetic-coupled spins below 15 K coexisting with an anti-ferromagnetic structure below 10 K. Specific heat capacity shows a finite ground-state electronic specific heat coefficient, gamma = 0.094 J/mol.K-2, that is higher than that of the bipyridine counterpart (0.068 J/mol.K-2), confirming an increase in the electronic density-of-states in the phenanthroline system.
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