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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.3
- 수록면
- 26 - 29 (4page)
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초록· 키워드
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Mn<SUB>x</SUB>Fe<SUB>3-x</SUB>O₄ powders have been fabricated by using sol-gel methods; their crystallographic and magnetic properties were investigated by using X-ray diffraction, scanning electron microscopy, Mossbauer spectroscopy, and vibrating sample magnetometer. The Mn<SUB>x</SUB>Fe<SUB>3-x</SUB>O₄ ferrite powders annealed at 500 ℃ had a single spinel structure regardless of the Mn²?-doping amount and their lattice constants became larger as the Mn²? concentration was increased. Their Mossbauer spectra measured at room temperature were fitted with 2 Zeeman sextets due to the tetrahedral and octahedral sites of Fe ions, which made them ferrimagnetic. The magnetic behavior of Mn<SUB>x</SUB>Fe<SUB>3-x</SUB>O₄ powders showed that the Mn²?-doping amount made their saturation magnetization increase, but there were no severe effects on their coercivities. The saturation magnetization of the Mn<SUB>x</SUB>Fe<SUB>3-x</SUB>O₄ powder varied from 38 emu/g to 70.0 emu/g and their minimum coercivity was 111.1 Oe.
목차
1. Introduction
2. Experiments
3. Results and Discussion
4. Conclusion
References
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UCI(KEPA) : I410-ECN-0101-2014-420-003165778