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- 산소 결핍에 따른 Fe가 도핑된 TiO2-δ의 상온 강자성 현상에 관한 연구
- 이희민, 김철성, 엄영랑, 이창규
- Room-temperature Ferromagnetism in Fe-doped Reduced TiO2-δ
- H.M. Lee, C.S. Kim, Y.R. Uhm, C.K. Rhee
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Journal of Korean Powder Metallurgy Institute 2006;13(6):401-407
DOI: https://doi.org/10.4150/KPMI.2006.13.6.401
1한국원자력연구소 원자력나노소재응용랩
2국민대학교 물리학과
3한국원자력연구소 원자력나노소재응용랩
4한국원자력연구소 원자력나노소재응용랩
1Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute
2Department of Physics, Kookmin University
3Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute
4Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute
2국민대학교 물리학과
3한국원자력연구소 원자력나노소재응용랩
4한국원자력연구소 원자력나노소재응용랩
1Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute
2Department of Physics, Kookmin University
3Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute
4Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute
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Abstract
Effects of oxygen deficiency on the room temperature ferromagnetism in Fe-doped reduced TiO_2 have been investigated by comparing the air-annealed Ti_0.97Fe_0.03O_2 compound with secondly post-annealed one in vacuum ambience. The air-annealed sample showed a paramagnetic behavior at room temperature. However, when the sample was further annealed in vacuum, a strongly enhanced ferromagnetic behavior was observed at same temperature. M"ossbauer spectra of air-annealed sample at 295K showed a single doublet of Fe3+
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