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Title: Spin–orbit coupling controlled ground state in the Ir(V) perovskites A2ScIrO6 (A = Ba or Sr)
Authors: Kayser, P
Kennedy, BJ
Ranjbar, B
Kimpton, JA
Avdeev, M
Keywords: Perovskites
Transition elements
Monoclinic lattices
Crystal field
Magnetic properties
Issue Date: 30-Jan-2017
Publisher: American Chemical Society
Citation: Kayser, P., Kennedy, B. J., Ranjbar, B., Kimpton, J. A., & Avdeev, M. (2017) Spin–orbit coupling controlled ground state in the Ir(V) perovskites A2ScIrO6 (A = Ba or Sr). Inorganic Chemistry, 56(4), 2204–2209. doi:10.1021/acs.inorgchem.6b02848
Abstract: The structural and magnetic properties of the two Ir(V) perovskites Ba2ScIrO6 and Sr2ScIrO6 were established. The structures were refined using a combined neutron and synchrotron data set. At room temperature the former has a cubic structure in space group Fm3̅m with a = 8.1450(3) Å, and the latter is monoclinic in P21/n with a = 5.6606(3) Å, b = 5.6366(3) Å, c = 7.9720(4) Å, and β = 89.977(5)°. Magnetization measurements show both oxides have magnetic moments close to zero as a consequence of strong spin–orbit coupling that results in a Jeff ≈ 0 ground state. The distortion of the IrO6 octahedra in Sr2ScIrO6 is insufficient to generate crystal field splitting strong enough to quench the spin–orbit coupling. © 2017 American Chemical Society
ISSN: 1520-510X
Appears in Collections:Journal Articles

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