A new method for measuring ultra-low frequency dielectric spectroscopy

Author

Zhang, Yewen ; Liu, Yaonan

Author_Institution

Dept. of Electr. Eng., Xi´´an Jiaotong Univ., Shaanxi, China

fYear

1988

fDate

12-16 Sep 1988

Firstpage

572

Abstract

A novel method is described for performing ultralow-frequency dielectric spectroscopy by the fast Fourier transform (FFT) technique. Measuring the absorption current by an electrometer, two groups of data with different sampling time intervals are obtained. The FFT is then used to implement the complex dielectric frequency spectroscopy, the frequency ranging from 10^-5 Hz to 0.5 Hz. The measuring system, consisting of an electrometer and a microcomputer, can perform data collection and spectroscopy calculation automatically. This FFT-based method can greatly reduce the calculation time. Experimental results on various kinds of materials show that the proposed approach is successful. The sensitivity of ε" is about 10^-4

Keywords

dielectric measurement; electrometers; fast Fourier transforms; spectroscopy; 1E-5 to 0.5 Hz; absorption current; complex dielectric frequency spectroscopy; data collection; electrometer; fast Fourier transform; sampling time intervals; ultra-low frequency dielectric spectroscopy; Absorption; Current measurement; Dielectric measurements; Electrochemical impedance spectroscopy; Fast Fourier transforms; Frequency measurement; Microcomputers; Performance evaluation; Sampling methods; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38461

Filename

38461