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자료유형
학술저널
저자정보
Inna Yusnila Khairani (Seoul National University) Anindityo Nugra Arifiadi (Seoul National University) Jae-Hyeok Lee (Seoul National University) Biswanath Bhoi (Seoul National University) Sandeep Kumar Singh Patel (Banaras Hindu University) Sang-koog Kim (Seoul National University)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.25 No.2
발행연도
2020.6
수록면
140 - 149 (10page)
DOI
10.4283/JMAG.2020.25.2.140

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We fabricated pure-phase BiFeO₃ (BFO) and MnFe₂O₄ (MFO) nanoparticles as well as their nanocomposites (BMFO), and then we studied their structures and magnetic properties. Pristine BFO nanoparticles of 93.3 nm average diameter were successfully synthesized using the sol-gel method by varying the solvent condition and the precursor amount. Pristine MFO nanoparticles with a mean diameter of 70.5 nm were synthesized using the co-precipitation method entailing the optimization of the preheating and aging steps. The fabricated MFO nanoparticles showed mostly nanospheres with few nanocubes. The nanocomposite samples of 50 % MFO and 50 % BFO were fabricated through grinding and pelletization, followed by sintering under an inert atmosphere. The crystal structures of the pristine materials in the nanocomposites were well preserved. The magnetization values (Ms) of the BFO, MFO, and BMFO were 4.9, 52, and 33 emu/g, respectively. This latter Ms value was significantly higher than that of BFO, owing to the coexistence of Fe<SUP>2+</SUP> and Fe<SUP>3+</SUP> in its BFO phase and the incorporation of magnetic MFO. Two synthesis methods and material properties including the structural, morphological, magnetic, and oxidation states of the BFO-MFO nanocomposites were studied in order to achieve a high Ms value of 33 emu/g, which is higher than the bulk values of previously reported BFOMFO composite samples.

목차

1. Introduction
2. Experimental Procedure
3. Results and Discussion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2020-428-000848151