2015/01/01 by David C. Wallace, Tyrel M. McQueen · 3 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Honeycomb #Honeycomb structure #Lattice (music) #Multiferroics and related materials #Octahedron #Physics of Superconductivity and Magnetism #Planar #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1039/c5dt03188e
published as Dalton Transactions v44, 20344-20351 (2015) · 16 pages, 6 figures
openalex publication_date 2015/01/01 · arxiv created 2015/12/17 · arxiv updated 2015/12/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We report the structures and physical properties of two new iridates, NaIrO3 and Sr3CaIr2O9, both of which contain continuous two-dimensional honeycomb connectivity. NaIrO3 is produced by room temperature oxidative deintercalation of sodium from Na2IrO3, and contains edge-sharing IrO6 octahedra that form a planar honeycomb lattice. Sr3CaIr2O9, produced via conventional solid-state synthesis, hosts a buckled honeycomb lattice with novel corner-sharing connectivity between IrO6 octahedra. Both of these new compounds are comprised of Ir(5+) (5d(4)) and exhibit negligible magnetic susceptibility. They are thus platforms to investigate the origin of the nonmagnetic behavior exhibited by Ir(5+) oxides, and provide the first examples of a J = 0 state on a honeycomb lattice.