研究目的
To characterize the complex index of refraction and the complex permittivity of a magnetic ceramic material made of copper, cobalt, and iron oxides at terahertz frequencies.
研究成果
The study successfully characterized the dielectric properties of CuCo ferrite at THz frequencies, revealing an almost frequency-independent behavior of the index of refraction and extinction coefficient. A potential use of this material for THz frequency devices, such as filters, was identified based on observed transmission and absorption characteristics.
研究不足
The spatial inhomogeneity of the sample composition may affect measurements at higher frequencies. The study is limited to the frequency range from 0.2 to 1 THz.
1：Experimental Design and Method Selection:
The study utilized a THz Time-Domain Spectroscopy (THz-TDS) system for measuring the amplitude and phase of THz electromagnetic radiation.
2：Sample Selection and Data Sources:
A CuCo ferrite sample with stoichiometry Cu
3：5Co5Fe2O4 was prepared using the solid state reaction route. List of Experimental Equipment and Materials:
THz-TDS transmission system, iPCA-21-05-1000-800-h emitter, PCA-40-05-10-800 detector, 50-mm tsurupica lenses.
4：Experimental Procedures and Operational Workflow:
The sample was measured in a THz-TDS system, with reference and sample measurements taken to calculate the complex index of refraction and permittivity.
5：Data Analysis Methods:
Fourier transforms of the measured signals were used to calculate the complex transmission coefficient, from which the complex index of refraction and permittivity were derived.
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