Electromagnetic Properties of Ca-Substituted Magnetic-Dielectric Composites

Abstract:

Ca-substituted magnetic-dielectric composites were prepared by the conventional solid-state method. XRD and SEM techniques are employed to investigate the phase composition and microstructure of ferrite particles. The complex permeability, capacity and impedance were measured with HP4291B and 4572A instruments, respectively, in the frequency rage from 1MHz to 1.8GHz. The results showed that a improvement of resistivity and Q factor occurs with the increasing content of CaCO₃. The average grain size and dielectric loss decrease with increasing Ca-additions. It also found CaCO₃ can promote the sintering process.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1396-1399
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1396
• Online since: October 2011
• Authors: Hui Zhong, Hua Lei Wang, Jie Yang, Yu Shi
• Keywords: Calcium-Substitution, Electromagnetic Properties, Ferroelectric–Ferromagnetic Composite Ferrite

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