Journal
INORGANIC CHEMISTRY
Volume 50, Issue 19, Pages 9400-9405Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic201023j
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Funding
- Office of Basic Energy Sciences, Division of Materials Sciences, U.S. Department of Energy [DE-FG02-86ER45259]
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We evaluated the spin-exchange interactions of Li3RuO4 by performing energy-mapping analysis based on density functional calculations and examined the nature of its magnetic transition at T-1 = 66 K and the divergence of the field-cooled and zero-field-cooled susceptibilities below T-2 = 32 K Our study shows that T-1 is associated with a three-dimensional antiferromagnetic ordering, in which the two-dimensional antiferromagnetic lattices parallel to the ab plane are antiferromagnetically coupled along the c direction. We examined how the substitutional defects, Ru atoms residing in the Li sites, affect the antiferromagnetic coupling along the c direction to explain why the expected c-axis doubling is not detected from powder neutron diffraction measurements. The susceptibility divergence below T-2 is attributed to a slight spin canting out of the ab plane.
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