研究目的
Investigating the structural, dielectric, and impedance spectroscopic properties of Fe doped BaTiO3 to understand the effects of Fe doping on the phase coexistence and dielectric behavior.
研究成果
The study successfully synthesized and characterized Fe doped BaTiO3, revealing the coexistence of tetragonal and hexagonal phases influenced by Fe doping levels. Dielectric and impedance measurements showed diffuse phase transition for samples with x=0.03 and 0.05. Equivalent circuit models were developed to separate contributions from different phases and interfaces.
研究不足
The study is limited to Fe doping levels of x=0.03, 0.05, and 0.10. The effects of other doping levels or dopants are not explored. The study focuses on the structural, dielectric, and impedance properties, leaving other potential properties unexplored.
1：Experimental Design and Method Selection:
Conventional solid state reaction method was used for synthesis. XRD, SEM, and EDX were employed for characterization. Dielectric and impedance measurements were conducted in the frequency range 20 Hz-1 MHz as a function of temperature (300-650 K).
2：Sample Selection and Data Sources:
Compositions with x=0.03, 0.05, and 0.10 in the system BaFexTi1–xO3 were synthesized.
3：03, 05, and 10 in the system BaFexTi1–xO3 were synthesized.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: BaCO3 (Merck 99.5%), Fe2O3 (Merck 99.5%), TiO2 (Merck 99.5%), Rigaku high resolution X-ray diffractometer, scanning electron microscope (SEM; Ziess), Novocontrol Alpha-A Analyzer.
4：5%), Fe2O3 (Merck 5%), TiO2 (Merck 5%), Rigaku high resolution X-ray diffractometer, scanning electron microscope (SEM; Ziess), Novocontrol Alpha-A Analyzer.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Appropriate amounts of raw materials were mixed, calcined, pressed into pellets, and sintered. Characterization was performed using XRD, SEM, and EDX. Dielectric and impedance measurements were carried out on electroded pellets.
5：Data Analysis Methods:
Rietveld refinement was carried out using Fullprof software. Complex impedance analysis was used to develop equivalent circuit models.
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