Journal
MATERIALIA
Volume 25, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtla.2022.101527
Keywords
Nanostructured materials; Ceramics; Shape factor; Sintering; Phase transformations
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Funding
- Indian Institute of Technology Patna
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This work demonstrates the versatility of the 'shape/consolidation factor' effect in materials such as TiO2 and BaTiO3. Through suitable characterization techniques, the phenomenon has been studied and the beneficial role of the shape factor in defect control has been discovered.
In this work, we demonstrate the versatility of the 'shape/consolidation factor' effect in unary and/or undoped ceramics (chosen systems: TiO2 and BaTiO3). The phenomenon has been examined via suitable characterization techniques, e.g., X -ray diffraction (XRD), Electron paramagnetic resonance (EPR), Raman Spectroscopy, Field emission scanning electron microscopy (FESEM) etc. In absence of the shape factor effect, undoped ceramics, e.g., TiO3 and BaTiO3 depicted a multitude of artifacts starting from issues with phase purity (i.e., emergence of extra/new phases), imbalance with stoichiometry, generation of unwanted vacancies (via depletion of ions) etc. The 'shape factor' effect, thus, proved to be beneficial for the control/mitigation of such defects. Dependencies of various possible factors on this 'shape factor' effect have also been highlighted.
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