Zhang, Z. and Lumpkin, G. R. and Howard, C. J. and Knight, K. S. and Whittle, K. R. and Osaka, K. (2007) Structures and phase diagram for the system CaTiO3-La2/3TiO3. Journal of Solid State Chemistry, 180 (3). pp. 1083-1092. DOI https://doi.org/10.1016/j.jssc.2007.01.005
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Abstract
High-resolution neutron and synchrotron X-ray powder diffraction have been used to examine various compositions across the system (1x)CaTiO3xLa2/3TiO3. The structures at room temperature were determined according to composition: in Pbnm for 0pxp0.5, Ibmm for 0.5oxo0.7, then I4/mcm for 0.7txo0.9, and finally in Cmmm for xX0.9. Although the four structures are the same as those proposed previously in an X-ray diffraction study, the phase boundaries are somewhat different, in particular the Pbnm2Ibmm phase boundary has been extended from xt0.4 to x40.5 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
Item Type: | Article |
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Uncontrolled Keywords: | 2007 P IA53 |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Journal of Solid State Chemistry |
Volume: | 180 |
Page Range: | pp. 1083-1092 |
Identification Number: | https://doi.org/10.1016/j.jssc.2007.01.005 |
Depositing User: | Sarah Humbert |
Date Deposited: | 16 Feb 2009 13:04 |
Last Modified: | 23 Jul 2013 09:54 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/838 |
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