| Spinel Ferrite에 관한 연구 (I) Mn-Zn계 Ferrite의 자기특성에 대한 희토류산화물의 첨가효과 |
| 김태옥 |
| 부산대학교 공과대학 재료공학과 |
| Studies on Spinel Ferrites (I) Effects of Addition of Rare-Earth Oxides on the Magnetic Properties of Mn-Zn Ferrites |
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| ABSTRACT |
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The effects of variation in composition and the addition of small amount of the rare-earth oxides La2O3, CeO2 and Sm2O3 on the magnetic properties of Mn-Zn system ferrites, 0.5MnO.0.5ZnO.(1＋0.1X) Fe2O3(X=-1, 0, 1, 2), were investigated in the range of frequencies of 0.1~100 kHz. It was shown that the magnetic permeability of the specimens with the composition Mn 0.5 Zn 0.5 Fe2O4 was maximum in the Mn-Zn system ferrites, and that the addition of a small amount of the rare-earth oxides to the composition 0.5 MnO.0.5ZnO.0.9 Fe2O3 caused the sharp increase of magnetic permeability and the decrease of the loss factors. |
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