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unige:82337 
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Crystal Structure, Transport, and Magnetic Properties of an Ir6+ Compound Ba8Al2IrO14 |
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| Published in | Inorganic Chemistry. 2015, vol. 54, no. 9, p. 4371-4376 | |
| Abstract | The novel iridate Ba8Al2IrO14 was prepared as single crystals by self-flux method, thereby providing a rare example of an all-Ir(VI) compound that can be synthesized under ambient pressure conditions. The preparation of all-Ir6+ iridate without using traditional high-pressure techniques has to our knowledge previously only been reported in Nd2K2IrO7 and Sm2K2IrO7. The monoclinic crystal structure (space group C2/m, No.12) is stable down to 90 K and contains layers of IrO6 octahedra separated by Ba and AlO4 tetrahedra. The material exhibits insulating behavior with a narrow band gap of ∼0.6 eV. The positive Seebeck coefficient indicates hole-like dominant charge carriers. Susceptibility measurement shows antiferromagnetic coupling with no order down to 2 K. | |
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Article (Published version) (2.1 MB) - Limited access to UNIGE Other version: http://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.5b00157 |
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| Citation (ISO format) | YANG, Lin et al. Crystal Structure, Transport, and Magnetic Properties of an Ir6+ Compound Ba8Al2IrO14. In: Inorganic Chemistry, 2015, vol. 54, n° 9, p. 4371-4376. https://archive-ouverte.unige.ch/unige:82337 |
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