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Comparative Study of Potentially Jeff=0 Ground State Iridium(V) in SrLaNiIrO6, SrLaMgIrO6, and SrLaZnIrO6

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Wolff,  Klaus K.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Agrestini,  Stefano
Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Jansen,  Martin
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Tjeng,  Liu Hao
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Wolff, K. K., Agrestini, S., Tanaka, A., Jansen, M., & Tjeng, L. H. (2017). Comparative Study of Potentially Jeff=0 Ground State Iridium(V) in SrLaNiIrO6, SrLaMgIrO6, and SrLaZnIrO6. Zeitschrift für anorganische und allgemeine Chemie, 643, 2095-2101. doi:10.1002/zaac.201700386.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002E-A010-9
Abstract
A series of polycrystalline double perovskites SrLaBIrO6 (B = Ni, Mg, Zn) containing Ir5+ (5d(4)) was synthesized by solid state reactions, and structural, magnetic and electronic properties were investigated. The isotypic fully ordered double perovskites crystallize in space group P2(1)/n and show semiconducting behavior with estimated bandgaps of approximately 0.2 eV for SrLaNiIrO6 and SrLaZnIrO6, and 0.4 eV for SrLaMgIrO6. SrLaNiIrO6 is an antiferromagnet with a Neel temperature of 74 K ((eff) = 3.3 (B), (W) = -90 K), whereas SrLaMgIrO6 and SrLaZnIrO6 are weakly paramagnetic. All title compounds exhibit a temperature-independent contribution to the measured magnetic susceptibility, which supports the notion for a van-Vleck-type response originating from the Ir5+ (5d(4), J(eff) = 0) ions.