Browsing by Author "Osaka, K"

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    Structures and phase diagram for the system CaTiO3-La2/3TiO3
    (Elsevier, 2007-03) Zhang, ZM; Lumpkin, GR; Howard, CJ; Knight, KS; Whittle, KR; Osaka, K
    High-resolution neutron and synchrotron X-ray powder diffraction have been used to examine various compositions across the system (1−x)CaTiO3−xLa2/3TiO3. The structures at room temperature were determined according to composition: in Pbnm for 0≤x≤0.5, Ibmm for 0.50.5 in the current study based on our high-resolution neutron diffraction data. From in situ measurements to identify structures above room temperature, an approximate composition–temperature phase diagram has been constructed, involving four temperature-induced phase transitions: Pbnm→I4/mcm, Ibmm→I4/mcm, I4/mcm→Pm3¯m and Cmmm→P4/mmm. © 2007, Elsevier Ltd.