Title :
Dielectric characteristics of Cu modified Z-type planar hexaferrite
Author :
Zhang, Hongguo ; Li, Longtu ; Zhou, Ji ; Yue, Zhenxing ; Gui, Zhilun
Author_Institution :
Dept. of Mater. Sci. & Eng., Tsinghua Univ., Beijing, China
Abstract :
The effect of Cu modification on dielectric properties of Z-type planar hexagonal ferrites sintered at relatively low temperatures with compositions of Ba3Co2(1-x-y)Cu2xZn2yFe 24-δO41 was-investigated. Experimental results show that dielectric constant and loss tgδ obviously degrade, dielectric relaxation peak shifts to high frequency region and resonance peaks appear in hyper frequencies. Progressive studies affirm that the improvement of dielectric and resistivity properties mainly results from the decrease of the number of Fe2+ ions
Keywords :
barium compounds; cobalt compounds; copper compounds; dielectric losses; dielectric relaxation; ferrites; inductors; permittivity; surface mount technology; zinc compounds; Ba3Co2(1-x-y)Cu2xZn2yFe24-δO41; SMT; Z-type planar hexagonal ferrites; dielectric characteristics; dielectric constant; dielectric relaxation peak; loss tgδ; multi-layer chip inductors; resistivity properties; resonance peaks; Conductivity; Degradation; Dielectric constant; Dielectric losses; Ferrites; Iron; Resonance; Resonant frequency; Temperature; Zinc;
Conference_Titel :
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-5940-2
DOI :
10.1109/ISAF.2000.942453