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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.3
- 수록면
- 7 - 13 (7page)
- DOI
- 10.4283/JMAG.2021.26.1.007
이용수
초록· 키워드
오류제보하기
We report the influence of annealing temperature (600 °C-1000 °C) on structure, crystallographic phase transition, morphology, ibrational, and magnetic properties of CuFe₂O₄ nanoparticles synthesized by a facile solgel auto combustion technique. The as-prepared and 600 °C air annealed samples show cubic spinel structure, secondary phases of α-Fe₂O₃, and CuO (minute reflections), resulting in inferior magnetic properties. Further, the 800 °C air annealed sample discloses a structural phase transition from cubic to tetragonal phase and minute α-Fe₂O₃ secondary phase. This sample exhibits the highest coercivity (H<SUB>C</SUB>) 1221.4 Oe and squareness ratio (M<SUB>R</SUB>/M<SUB>20kOe</SUB>) = 0.56. On the other hand, the sample annealed at 1000 °C in air reveals superior magnetic properties (magnetization = 24.5 emu/g & H<SUB>C</SUB> = 484.7 Oe) compared to all other samples. The revolution of magnetic properties with annealing temperature originates from the morphology, cubic to a tetragonal structural phase transition, c/a > 1, and cation site occupation induced by Jahn–Teller distortion.
목차
1. Introduction
2. Experimental Details
3. Results and Discussions
4. Conclusions
References
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