The Frustrated Magnetic Order of the Dimer Spin System Ba3B´Ir2O9, B´ = Sc or Y.
Studies of iridium-based compounds are at the forefront of solid state physics research. In these materials the electronic configurations are driven by strong spin-orbit coupling. We are studying the spin frustration in Ba3B´Ir2O9 B´= Y, or Sc materials, where one lone electron is shared over the structural Ir dimer. Due to the weak moment of these materials antiferromagnetic Ir dimers have been proposed, that have frustrated antiferromagnetic interactions on the hexagonal lattice. Like in the isostructural Ru materials changing B´ dramatically changes the magnitude of the moment, with Ru forming ferromagnetic dimers. We plan to investigate the role of increased spin-orbit coupling on the frustrated magnetism in this structural series of materials.
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P. G. Freeman; MAHAJAN Avinash; NILSEN Goran; ROLFS Katharina; Henrik M. Ronnow and SHARMA Ramender Kumar. (2015). The Frustrated Magnetic Order of the Dimer Spin System Ba3B´Ir2O9, B´ = Sc or Y.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-32-807
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