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|Title:||Investigating the order-disorder phase transition in Nd2-xYxZr2O7via diffraction and spectroscopy|
|Publisher:||Royal Society of Chemistry|
|Citation:||Blanchard, P. E. R., Liu, S., Kennedy, B. J., Ling, C. D., Zhang, Z. M., Avdeev, M., Cowie, B. C. C., Thomsen, L., & Jang, L. Y. (2013). Investigating the order-disorder phase transition in nd2-xyxzr2o7 via diffraction and spectroscopy. Dalton Transactions, 42(41), 14875-14882. doi:10.1039/c3dt51420j|
|Abstract:||The pyrochlore-defect fluorite phase transition in the mixed-metal zirconate Nd2-xYxZr2O7 (0 <= x <= 2) solid solution was investigated using synchrotron X-ray and neutron diffraction, as well as X-ray absorption spectroscopy. Diffraction analysis revealed a two-phase region between 1.0 <= x <= 1.2. In the pyrochlore phase, Zr L-3-edge XANES analysis demonstrated a gradual change in the local coordination environment of the B site with increasing Y content that was consistent with an increase in disorder. Although Y L-3-edge XANES analysis suggested that the Y cations remained in an ordered coordination environment in the pyrochlore phase, disorder did gradually increase once the fluorite phase formed. It was found that Y cations prefer an ordered coordination environment near the phase boundary whereas Zr cations prefer a disordered coordination environment. © 2013, Royal Society of Chemistry|
|Gov't Doc #:||5435|
|Appears in Collections:||Journal Articles|
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