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https://apo.ansto.gov.au/dspace/handle/10238/5544| Title: | Synthesis, structural and magnetic studies of the double perovskites Ba2CeMO6 (M = Ta, Nb) |
| Authors: | Zhou, QD Blanchard, PER Kennedy, BJ Reynolds, EM Zhang, Z Miiller, W Aitken, JB Avdeev, M Jang, LY Kimpton, JA |
| Keywords: | Perovskite Cerium Phase transformations Neutron diffraction X-ray lasers Crystals |
| Issue Date: | 16-Jul-2012 |
| Publisher: | American Chemical Society |
| Citation: | Zhou, Q. D., Blanchard, P., Kennedy, B. J., Reynolds, E., Zhang, Z., Miiller, W., Aitken, J. B., Avdeev, M., Jang, L. Y., & Kimpton, J. A. (2012). Synthesis, structural and magnetic studies of the double perovskites Ba2CeMO6 (M = Ta, Nb). Chemistry of Materials, 24(15), 2978-2986. doi:10.1021/cm301278a |
| Abstract: | Two Ce(3+) containing double perovskites Ba(2)CeMO(6) (M = Nb and Ta) have been prepared through the use of mildly reducing conditions, and the Ce valence state has been shown to be +3 through Ce L-edge X-ray absorption measurements. Both oxides adopt a monoclinic structure in I2/m at room temperature and undergo two phase transitions upon heating, a discontinuous I2/m -> R (3) over bar and a continuous R (3) over bar -> Fm (3) over barm transition. Analysis of the first order I2/m -> R (3) over bar transitions is impeded by the complex peak shapes and diffuse scattering evident in the synchrotron powder diffraction data because of domain wall effects. © 2012, American Chemical Society. |
| Gov't Doc #: | 4603 |
| URI: | http://dx.doi.org/10.1021/cm301278a http://apo.ansto.gov.au/dspace/handle/10238/5544 |
| ISSN: | 0897-4756 |
| Appears in Collections: | Journal Articles |
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