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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 |
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| ABSTRACT |
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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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