Browsing by author "Brendan, J Kennedy"
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Ordered vs. disordered perovskites; structural studies of Fe-doped SrIrO3 and SrRuO3
Ilyas, Qasim; Peter, ER Blanchard; Samuel, Liu; Chunguang, Tang; Brendan, J Kennedy; Avdeev, Maxim; Justin, A KimptonPublished 2013The structures of the two Fe containing perovskites Sr 2 IrFeO 6 and SrRu 0.5 Fe 0.5 O 3 have been established using a combination of synchrotron and neutron diffraction methods. Sr 2 IrFeO 6 and SrRu 0.5 Fe 0.5 O 3 are ...Article -
Soft ferromagnetism in mixed valence Sr1_ xLa xTi0.5Mn0.5O3 perovskites
Ilyas, Qasim; Peter, ER Blanchard; Brendan, J Kennedy; Chris, D Ling; Ling-Yun, Jang; Takashi, Kamiyama; Ping, Miao; Shuki, ToriiPublished 2014The structural, magnetic and electrical properties of the mixed Ti–Mn oxides Sr1−xLaxTi0.5Mn0.5O3 (0 ≤ x ≤ 0.5) are reported. At room temperature the oxides have a cubic structure in space group Pmm for x ≤ 0.25 and ...Article -
Stabilising the orthorhombic perovskite structure in SrIrO3 through chemical doping. Synthesis, structure and magnetic properties of SrIr1- x Mg x O3 (0.20≤ x≤ 0.33)
Ilyas, Qasim; Brendan, J Kennedy; Avdeev, MaximPublished 2013The 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 ...Article -
Structural characterization of the perovskite series Sr1-xLaxTi0.5Mn0.5O3
Ilyas, Qasim; Brendan, J KennedyPublished 2013The perovskite-type compounds Sr{sub 1−x}La{sub x}Ti{sub 0.5}Mn{sub 0.5}O{sub 3}, x=0, 0.1, 0.2, 0.3, 0.4 and 0.5 have been synthesized by solid-state methods, and their room temperature structures determined using X-ray ...Article -
Synthesis, structures and properties of transition metal doped SrIrO3
Ilyas, Qasim; Brendan, J Kennedy; Avdeev, MaximPublished 2013The synthesis of some transition metal SrIr1_xMxO3 type oxides is described. These have an orthorhombic perovskite type-structure and are only found when the formal oxidation state of the Ir is approximately equal to +4.5 ...Article -
X-ray absorption near edge structure and crystallographic studies of the mixed valence oxide SrRu0.8Ni0.2O3
Ilyas, Qasim; Brendan, J Kennedy; Zhaoming, Zhang; Avdeev, Maxim; Ling-Yun, JangPublished 2011Neutron diffraction methods are used to refine the structure of SrRu 0.8 Ni 0.2 O 3 at room temperature and 4 K. X-ray absorption measurements at the Ru L-edge demonstrate that partial oxidation of the Ru 4+ to Ru 5+ occurs ...Article
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