研究目的
Investigating the physical properties of lithium-niobate thin films deposited using spray pyrolysis method.
研究成果
LiNbO3 nanostructures were successfully prepared using the spray pyrolysis method, showing good quality and improvement in morphology with increasing annealing temperatures up to 500°C. The structural properties indicated polycrystalline nature with moderate diffraction peak at (012) diffraction plane. AFM results presented high smoothness and distribution with low roughness. The grain size of the prepared crystal decreased with increment of annealing temperatures.
研究不足
The study is limited to the physical properties of lithium-niobate thin films prepared by spray pyrolysis method. The effects of other deposition methods or materials were not explored.
1：Experimental Design and Method Selection:
The spray pyrolysis deposition method was chosen to prepare the Nano samples of lithium-niobate from raw materials of Lithium carbonate (Li2CO3) and niobium oxide (Nb2O5). The deposition process was performed on a quartz substrate with a range of annealing temperatures to maintain physical changes in the prepared samples properties.
2：5). The deposition process was performed on a quartz substrate with a range of annealing temperatures to maintain physical changes in the prepared samples properties.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The raw materials used were lithium carbonate (Li2CO3) and niobium oxide (Nb2O5). The preparation process involved mixing these materials with ethylene glycol and citric acid in one solution, followed by continuous heating and stirring at 90°C for 48 hours.
3：5). The preparation process involved mixing these materials with ethylene glycol and citric acid in one solution, followed by continuous heating and stirring at 90°C for 48 hours.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Field Emission Scanning Electron Microscope (FE-SEM), AFM, and film thickness measurement tools were used for characterization.
4：Experimental Procedures and Operational Workflow:
The solution was sprayed and heated up to 400°C over a wafer of borosilicate quartz substrate. Samples were calcined in oxygen atmosphere at three annealing temperatures of 400, 500, and 600°C for at least 2 hours.
5：Data Analysis Methods:
High resolution X-ray diffraction method was used to study structural properties. Surface morphology was examined using FE-SEM system.
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