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논문 기본 정보

자료유형
학술저널
저자정보
Mohammad Niyaifar (Islamic Azad University) Hory Mohammadpour (Islamic Azad University) Anselmo F. R. Rodriguez (Universidade Federal do Acre)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.20 No.3
발행연도
2015.9
수록면
246 - 251 (6page)

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초록· 키워드

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This study was aimed to study the effect of Zn content on the hyperfine parameters and the structural variation of Ni<SUB>1-x</SUB>Zn<SUB>x</SUB>Fe₂O₄ for x = 0, 0.2, 0.4, 0.6, and 0.8. To achieve this, a sol?gel route was used for the preparation of samples and the obtained ferrites were investigated by X-ray diffraction, scanning electron microscopy, and Mossbauer spectroscopy. The formation of spinel phase without any impurity peak was identified by X-ray diffraction of all the samples. Moreover, the estimated crystallite size by X-ray line broadening indicates a decrease with increasing Zn content. This result was in agreement with the scanning electron microscopy result, indicating the reduction in grain growth with further zinc substitution. The room-temperature Mossbauer spectra show that the hyperfine fields at both the A and B sites decreased with increasing Zn content; however, the rate of reduction is not the same for different sites. Moreover, the best fit parameter showed that the quadrupole splitting values of B site increased from the pure nickel ferrite to the sample with x = 0.8.

목차

1. Introduction
2. Material and Methods
3. Result and Discussions
4. Conclusion
References

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