研究目的
Investigating the magnetodielectric effect in a metamaterial consisting of xerogel SiO2 with embedded ε-Fe2O3 nanoparticles.
研究成果
The study demonstrates the magnetodielectric effect in a bulk material consisting of SiO2 xerogel with embedded ε-Fe2O3 nanoparticles, indicating the interplay between the magnetic and dielectric properties of ε-Fe2O3. The findings suggest potential applications in memory cells and magnetic sensors.
研究不足
The study is limited to the investigation of the magnetodielectric effect in ε-Fe2O3 nanoparticles embedded in a xerogel matrix, with potential areas for optimization in sample preparation and measurement techniques.
1：Experimental Design and Method Selection:
The study involved synthesizing ε-Fe2O3 nanoparticles embedded in a SiO2 xerogel matrix and investigating their magnetodielectric properties.
2：Sample Selection and Data Sources:
Samples containing 20 mass.% of ε-Fe2O3 and empty xerogel were prepared.
3：List of Experimental Equipment and Materials:
A setup for permittivity measurements based on a Quantum Design PPMS-9000 Physical Property Measurement System and an Agilent E4980A Precision LCR Meter were used.
4：Experimental Procedures and Operational Workflow:
Dielectric measurements were performed on plate-like samples with deposited conductive paste.
5：Data Analysis Methods:
The permittivity was calculated using a classical formula for a parallel-plate capacitor.
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