研究目的
Investigating the effect of Eu3+ ion substitution on the dielectric properties and conductivity of Y3?xEuxAl5O12 ceramics.
研究成果
Eu3+ ion substitution in YAG ceramics significantly affects the dielectric properties and conductivity, with the most notable impact observed at x = 0.05. The study provides insights into the conduction mechanism involving 4f–Eu and 3d–Al ions in both Oh and Td symmetries.
研究不足
The study is limited to the effects of Eu3+ ion substitution on YAG ceramics and does not explore other dopants or fabrication methods.
1：Experimental Design and Method Selection:
The study employed a solid-state reaction method to fabricate Y3?xEuxAl5O12 ceramics. The phase identification was performed using X-ray diffraction and high-resolution transmission electron microscopy.
2：Sample Selection and Data Sources:
Y2O3, Eu2O3, and Al2O3 with
3：9% purity were used as starting materials. List of Experimental Equipment and Materials:
Rigaku Bench type X-ray powder diffractometer, FEI Titan S/TEM microscope, Novocontrol Alpha-N high-resolution dielectric-impedance analyzer.
4：Experimental Procedures and Operational Workflow:
The metal oxides were mixed, ground, pelletized, and sintered at three stages (1300°C for 12 h, 1500°C for 4 h, and 1600°C for 2 h).
5：Data Analysis Methods:
The electrical and dielectric properties were analyzed as functions of frequency and temperature.
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