Effect of Calcination Temperature on the Microstructure of NiFe2O4 Nanopowder Synthesized by Low Temperature Solid-State Reaction
Abstract: NiFe2O4 nanopowders were prepared by low temperature solid-state reaction. The effect of calci-nation temperature on the microstructure of NiFe2O4 nanopowder was investigated in details. The as-obtained powders were characterized by XRD, SEM and TEM. The results show that the reflection peaks enhance and become sharper as the calcination temperature increases, indicating the improvement of crystallinity and grain size. The grain growth activation energy of NiFe2O4 during calcination was 14.76 kJ∙mol−1, implying that the principal transmission mechanism was interfacial diffusion. As the calcination temperature increases, the incubation period shortens; the growth rate increases, the characteristic of particle polygonization becomes obvious and the grains grow up evidently.
文章引用: 张志刚 , 徐建荣 , 张 啸 , 马俊飞 (2015) 煅烧温度对低温固相合成NiFe2O4纳米粉显微组织结构的影响。 凝聚态物理学进展， 4， 18-23. doi: 10.12677/CMP.2015.41003
 Sugimoto, M. (1999) The past, present and future of ferrites. Journal of the American Ceramic Society, 82, 269-280.
 Sousa, M.H., Hasmonay, E., Depeyrot, J., Tourinho, F.A., Bacri, J.C., Dubois, E., Perzynski, R. and Raikher, Y.L. (2002) NiFe2O4 nanoparticles in ferrofluids: Evidence of spin disorder in the surface layer. Journal of Magnetism and Magnetic Materials, 242-245, 572-574.
 Chen, D.W. and He, X.R. (2001) Synthesis of nickel fer-rite nanoparticles by sol-gel method. Materials Research Bulletin, 36, 1369-1377.
 Huo, J.Z. and Wei, M.Z. (2009) Characterization and magnetic properties of nanocrystalline nickel ferrite synthesized by hydrothermal method. Materials Letters, 63, 1183-1184.
 Maaz, K., Karim, S., Mumtaz, A., Hasanain, S.K., Liu, J. and Duan, J.L. (2009) Synthesis and magnetic characterization of nickel ferrite nanoparticles prepared by co-precipitation route. Journal of Magnetism and Magnetic Material, 321, 1838-1842.
 周益明, 忻新泉 (1999) 低热固相合成化学. 无机化学学报, 3, 273-292.
 Klug, H.P. and Alexander, L.E. (1954) X-ray Diffraction Procedure. Wiley Inter Science, New York.
 Málek, J. (2000) Kinetic analysis of crystallization processes in amorphous materials. Thermochimica Acta, 355, 239- 253.
 Wang, H.R., Gao, Y.L., Ye, Y.F., Min, G.H., Chen, Y. and Teng, X.Y. (2003) Crystallization ki-netics of an amorphous Zr-Cu-Ni alloy: Calculation of the activation energy. Journal of Alloys and Compounds, 353, 200-206.
 杨华明, 张向超, 杨武国, 黄承焕, 邱冠周 (2004) NiFe2O4纳米晶的合成及焙烧动力学. 中南大学学报(自然科学版), 3, 368-371.