کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1504050 | 1510970 | 2016 | 5 صفحه PDF | دانلود رایگان |
• Phase separation in NaTaO3 studied using high resolution powder diffraction.
• At room temperature Pbnm and Cmcm phase co-exist in polycrystalline NaTaO3 samples.
• Annealing has little impact on the phase distribution at room temperature.
• Doping has a significant impact on phase separation, tending to favour the Cmcm phase.
The importance of sample history on the Pbnm-Cmcm phase coexistence in NaTaO3 has been investigated using high resolution neutron and synchrotron X-ray diffraction methods. These results reveal that the phase coexistence, associated with the first order Pbnm-Cmcm phase transition, is not significantly affected by the annealing conditions used to prepare the sample. Rather it is found that compositional inhomogeneities or defects play a significant role in stabilising the high temperature Cmcm phase at room temperature.
Figure optionsDownload as PowerPoint slide
Journal: Solid State Sciences - Volume 52, February 2016, Pages 149–153