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11:17
Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
Published on: February 9, 2017
The preferred CSL misorientation distribution in polycrystalline SrTiO3
Myung-Beom Park1, Shao-Ju Shih, David J H Cockayne
1Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom.
Journal of Microscopy
|September 1, 2007
Summary
Electron backscattered diffraction revealed preferred coincidence site lattice (CSL) distributions in strontium titanate (SrTiO3) after annealing. Lower CSL boundary energy appears to drive preferred grain growth in this material.
Area of Science:
- Materials Science
- Crystallography
- Solid-State Physics
Background:
- Polycrystalline materials exhibit grain boundaries that influence properties.
- Strontium titanate (SrTiO3) is a key material in various electronic applications.
- Understanding grain growth mechanisms is crucial for material optimization.
Purpose of the Study:
- To investigate the influence of annealing time on coincidence site lattice (CSL) distribution in polycrystalline SrTiO3.
- To determine the role of CSL boundary energy in preferred grain growth.
- To analyze grain misorientation characteristics using electron backscattered diffraction.
Main Methods:
- Electron backscattered diffraction (EBSD) was employed.
- Polycrystalline SrTiO3 samples were subjected to annealing at 1 h and 16 h.
- CSL misorientations and distributions were analyzed.
Main Results:
- A preferred distribution of CSL boundaries was observed in SrTiO3.
- Annealing time influenced the CSL distribution.
- Analysis of CSL misorientations indicated a correlation with grain growth.
Conclusions:
- CSL boundary energy is a significant factor in the preferred grain growth of SrTiO3.
- The findings provide insights into microstructure evolution in polycrystalline ceramics.
- Optimized annealing conditions can potentially control grain boundary characteristics.
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