Stabilising the orthorhombic perovskite structure in SrIrO3 through chemical doping. Synthesis, structure and magnetic properties of SrIr1−xMgxO3(0.20 ≤ x ≤ 0.33)
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Date
2013-01-01
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Royal Society of Chemistry
Abstract
The synthesis, structure, magnetic and electric conductivity properties of Mg doped SrIrO3 are described. Doping SrIrO3 with Mg favours an orthorhombic structure over the hexagonal face-sharing structure. Polycrystalline samples of the type SrIr1-xMgxO3 with an orthorhombic perovskite-type structure have been formed for 0.2 < x < 0.33. At x = 0.2 the formal oxidation state of the Ir is +4.5 and the material displays metallic conductivity. At x = 0.33 the Ir is in the +5 state and the material is non-metallic. Magnetic susceptibility measurements demonstrate the materials to be spin-glasses in which short range ferromagnetic interactions are evident.© 2013, Royal Society of Chemistry
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Keywords
Synthesis, Electric conductivity, Magnesium, Strontium, Iridium, Interactions
Citation
Qasim, I., Kennedy, B.J., & Avdeev, M. (2013). Stabilising the orthorhombic perovskite structure in sriro3 through chemical doping. Synthesis, structure and magnetic properties of SrIr1−xMgxO3(0.20 ≤ x ≤ 0.33). Journal of Materials Chemistry A, 1(42), 13357-13362. doi:10.1039/c3ta12326j