title: Crystal Structure, Transport, and Magnetic Properties of an Ir(6+) Compound Ba8Al2IrO14.
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-Ir(6+) 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.
authors: Lin
authors: L
authors: Yang
authors: Andrea
authors: A
authors: Pisoni
authors: Arnaud
authors: A
authors: Magrez
authors: Sergiy
authors: S
authors: Katrych
authors: Alla
authors: A
authors: Arakcheeva
authors: Bastien
authors: B
authors: Dalla Piazza
authors: Krunoslav
authors: K
authors: Prša
authors: Jaćim
authors: J
authors: Jaćimović
authors: ∥DPMC, University of Geneva, CH-1211 Geneva, Switzerland.
authors: Ana
authors: A
authors: Akrap
authors: ∥DPMC, University of Geneva, CH-1211 Geneva, Switzerland.
authors: Jérémie
authors: J
authors: Teyssier
authors: László
authors: L
authors: Forró
authors: ⊥Neutron Science Laboratory, Institute of Solid State Physics (ISSP), University of Tokyo, Kashiwa, Japan.|#Center for Emergent Matter Science (CEMS), RIKEN, Wako-shi, Japan.
authors: Henrik M
authors: HM
authors: Rønnow