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J. Korean Ceram. Soc. > Volume 30(11); 1993 > Article
Journal of the Korean Ceramic Society 1993;30(11): 962.
Y-type hexagonal Ferrite의 전기적 특성
박영민, 최경만
포항공과대학 재료금속공학과
Electrical Properties of Y-type Hexagonal Ferrite
Effect of Fe content on the electrical properties of Zn2Y (Ba2Zn2Fe12O22) was studied by investigating X-ray diffraction patterns, microstructure and resistivity of samples. When x(Ba2Zn2Fe12+xO$delta$) is between +1 and -1, Zn2Y single phase was obtained and electrical resistivity was inversely proportional to Fe content. The possible defect model of Zn2Y was proposed based on the observation. When x<-1 or x>1, second phase(ZnFe2O4 for x<-1, ZnFe2O4 and Ba3Zn3Fe24O41 for x>1) were observed and the electrical resistivity was inversely proportional to the sample density. The activation energy of electrical conductivity of the stoichiometric Zn2Y was 0.49eV below 20$0^{circ}C$ and 0.07eV above 50$0^{circ}C$.
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