MnZn ferrites with the chemical formula Mn0.68Zn0.25Fe2.07O4 were prepared by conventional ceramic techniques. The influence of Ta2O5 addition on the microstructure and magnetic properties of MnZn ferrites was investigated. When the Ta2O5 addition is less than 0.04wt%, the grain size increases with the increase of Ta2O5 concentration, the initial permeability, saturation magnetic flux density and DC resistivity increase, the power losses and porosity decrease. However, excessive Ta2O5 addition (>0.04wt%) results in the exaggerated grain growth and porosity increase which make the initial permeability, saturation magnetic flux density and DC resistivity decrease, and the power losses increase. When the Ta2O5 addition is 0.04wt%, the initial permeability, saturation magnetic flux density and DC resistivity reach the maximum, the power losses and porosity reach the minimum.
LI Le-Zhong
,
LAN Zhong-Wen
,
YU Zhong
,
SUN Ke
,
LUO Ming
,
JI Hai-Ning
. Influence of Ta2O5 Addition on the Properties of MnZn Power Ferrites[J]. Journal of Inorganic Materials, 2009
, 24(2)
: 379
-382
.
DOI: 10.3724/SP.J.1077.2009.00379
[1]Van der Zaag P J. J. Magn. Magn. Mater., 1999, 196-197(5): 315-319.
[2]Waseem Roshen. IEEE Trans. Magn., 1991, 27(6): 4407-4415.
[3]Shokrollahi H, Janghorban K. Mater. Sci. Eng. B, 2007, 141(3): 91-107.
[4]Lin I N, Mishra R, Thomas G. IEEE Trans. Magn., 1982, 18(6): 1544-1546.
[5]Nie Jianhua, Li Haihua, Feng Zekun, et al. J. Magn. Magn. Mater., 2003, 265(2): 172-175.
[6]Chen S H, Chang S C, Tsay C Y, et al. J. Eur. Ceram. Soc., 2001, 21(1011): 1 931-1 935.
[7]Janghorban K, Shokrollahi H. J. Magn. Magn. Mater., 2007, 308(2): 238-242.
[8]余 忠, 兰中文, 王京梅. 材料研究学报, 2004, 18(2): 176-180.
[9]Andrei P, Caltun O F, Papusoi C, et al. J. Magn. Magn. Mater., 1999, 196-197(5): 362-364.
[10]Yu Zhong, Sun Ke, Li Lezhong, et al. J. Magn. Magn. Mater., 2008, 320(6): 919-923.
[11]Znidarsic A, Limpel M, Drofenik M. IEEE Trans. Magn., 1995, 31(2): 950-953.
[12]Lin Yingchun, Gan Dershin, Shen Pouyan. Mater. Sci. Eng. A, 1994, 188(1-2): 327-334.
[13]Li Lezhong, Lan Zhongwen, Yu Zhong, et al. IEEE Trans. Magn., 2008, 44(9): 2107-2112.
[14]Singh A K, Thakur O P, Prakash C, et al. In: IEEE International Magnetics Conference, Boston, America, 2003. HC-08.
[15]孙 科, 兰中文, 陈代中, 等. 硅酸盐学报. 2006, 34(7): 818-822.
[16]姜久兴, 李 垚, 赫晓东, 等. 硅酸盐学报. 2004, 32(6): 747-750.
[17]黄永杰, 李世堃, 兰中文. 磁性材料. 成都: 电子科技大学出版社,1993: 64-70.
[18]Li Lezhong, Lan Zhongwen, Yu Zhong, et al. IEEE Trans. Magn., 2008, 44(1): 13-16.
[19]宛德福, 马兴隆. 磁性物理学. 成都: 电子科技大学出版社, 1994: 303-312.
[20]Fujita A, Gotoh S. J. Appl. Phys., 2003, 93(10): 7477-7479.
[21]Li Haihua, Feng Zekun, He Huahui, et al. J. Magn. Magn. Mater., 2001, 237(2): 153-157.
[22]Yo Sakaki, Takashi Matsuoka. IEEE Trans. Magn., 1986, 22(5): 623-625.
[23]Inoue O, Matsutani N, Kugimiya K. IEEE Trans. Magn., 1993, 29(6): 3532-3534.
[24]Otobe S,Yachi Y, Hashimoto T,et al. IEEE Trans. Magn., 1999, 35(5): 3409-3411.