Dielectric properties and space charge behavior in SiC ceramic capacitor

Zhang, Rui; Gao, Lian; Wang, Hailong; Guo, Jingkun
September 2004
Applied Physics Letters;9/13/2004, Vol. 85 Issue 11, p2047
Academic Journal
Strong space charge response is observed in SiC ceramic capacitors at low frequencies up to 0.1 MHz. It leads to a dielectric constant of 2 910 000 at 100 Hz. The critical temperature is observed near 773 K. The losses decrease with increasing temperature. Strong frequency dependence of the dielectric properties is also detected. The SiC ceramic capacitor might be suitable as high-temperature by-pass capacitor in low voltage circuits.


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