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|Title: ||Synthesis, Structural and Magnetic Studies of the Double Perovskites Ba2CeMO6 (M = Ta, Nb)|
|Authors: ||Zhou, QD|
|Issue Date: ||14-Aug-2012|
|Publisher: ||American Chemical Society|
|Citation: ||Zhou, Q. D., Blanchard, P., Kennedy, B. J., Reynolds, E., Zhang, Z. M., 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.|
|Appears in Collections:||Journal Articles|
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