Fabrication and Characterization of Mn0.5Zn0.5Fe2O4 Magnetic Nanofibers
XIANG Jun1,2, SHEN Xiang-Qian1, SONG Fu-Zhan1, MENG Xian-Feng1
1School of Materials Science and Engineering, Jiangsu University, Zhenjiang 2120132School of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang 212003
Fabrication and Characterization of Mn0.5Zn0.5Fe2O4 Magnetic Nanofibers
XIANG Jun1,2, SHEN Xiang-Qian1, SONG Fu-Zhan1, MENG Xian-Feng1
1School of Materials Science and Engineering, Jiangsu University, Zhenjiang 2120132School of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang 212003
摘要Mn0.5Zn0.5Fe2O4 Magnetic nanofibers were fabricated by calcining electrospun polymer/inorganic composite nanofibers and characterized by thermogravimetric and differential thermal analysis, x-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy and a vibrating sample magnetometer. The experimental results show that the pure spinel structure is basically formed when the composite nanofibers are calcined at 450°C for 2h. With the increasing calcination temperature, both the saturation magnetization and coercivity of nanofiber samples increase initially along with the growth of Mn0.5Zn0.5Fe2O4 nanocrystals contained in the nanofibers. However, when the calcination temperature reaches 550°C, the saturation magnetization of nanofibers starts to dramatically decrease owing to the formation of the α-Fe2O3 phase at this temperature. The prepared Mn0.5Zn0.5Fe2O4 nanofibers calcined at 500°C for 2h have diameters ranging from 100 to 200nm. Their saturation magnetization and coercivity are 12.37emu/g and 4.81kA/m at room temperature, respectively.
Abstract：Mn0.5Zn0.5Fe2O4 Magnetic nanofibers were fabricated by calcining electrospun polymer/inorganic composite nanofibers and characterized by thermogravimetric and differential thermal analysis, x-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy and a vibrating sample magnetometer. The experimental results show that the pure spinel structure is basically formed when the composite nanofibers are calcined at 450°C for 2h. With the increasing calcination temperature, both the saturation magnetization and coercivity of nanofiber samples increase initially along with the growth of Mn0.5Zn0.5Fe2O4 nanocrystals contained in the nanofibers. However, when the calcination temperature reaches 550°C, the saturation magnetization of nanofibers starts to dramatically decrease owing to the formation of the α-Fe2O3 phase at this temperature. The prepared Mn0.5Zn0.5Fe2O4 nanofibers calcined at 500°C for 2h have diameters ranging from 100 to 200nm. Their saturation magnetization and coercivity are 12.37emu/g and 4.81kA/m at room temperature, respectively.
[1] Huang M H et al 2001 Science 292 1897 [2] Duan X F et al 2001 Nature 409 66 [3] Xia Y et al 2003 Adv. Mater. 15 353 [4] Zhu Y Q et al 2002 Chem. Phys. Lett. 365 457 [5] Sen R et al 2001 Chem. Phys. Lett. 340 242 [6] Yin L W et al 2005 Adv. Mater. 17 213 [7] Xu C K et al 2002 Scripta Mater. 46 789 [8] Li D et al 2003 Appl. Phys. Lett. 83 4586 [9] Shao C L et al 2002 Nanotechnology 13 635 [10] Zhao J G et al 2008 Chin. Phys. Lett. 25 3787 [11] Li D et al 2006 J. Am. Ceram. Soc. 89 1861 [12] Dasgupta S et al 2006 J. Magn. Magn. Mater. 306 9 [13] Azadmanjiri J 2007 J. Non-Cryst. Solids 3534170 [14] Mathur P et al 2008 J. Magn. Magn. Mater. 3201364 [15] Nalbandian L et al 2008 Microporous MesoporousMater. 114 465 [16] Shultz M D et al 2007 J. Appl. Phys. 10109M518 [17] Makovec D et al 2004 Nanotechnology 15 S160 [18] Wang L X et al 2008 Phys. Status Solidi A 2052453 [19] Liu Y et al 2006 Mater. Sci. Eng. B 127 108 [20] Etoh H et al 2009 J. Phys.: Conf. Ser. 165012031 [21] Gillot B et al 1993 J. Solid State Chem. 106 443 [22] Isfahani M J N et al 2009 J. Magn. Magn. Mater. 321 152 [23] Maaz K et al 2009 Physica E 41 593 [24] Mandal K et al 2002 J. Appl. Phys. 92 501 [25] Stoner E C and Wohlfarth E P 1991 IEEE Trans. Magn. 27 3475 [26] Vestal C R and Zhang Z J 2003 Nano Lett. 31739 [27] Song Q and Zhang Z J 2004 J. Am. Chem. Soc. 126 6164 [28] Jing Z H et al 2004 Mater. Res. Bull. 39 2057
2010, Vol. 27 
