研究了在（Ｎｉ０.2Ｃｕ0 .2Ｚｎ0 .６）１．０３（Ｆｅ2Ｏ３)0 ．９７＋０．９７ｘＭnO2(ｘ=０．１～０．５)中，随Ｍｎ含量的变化，磁性能的改变及与微观结构的关系．适量的Ｍｎ掺杂可以提高室温下铁氧体的起始磁导率，而Ｍｎ含量继续增加会促使第二相形成，使磁导率温度系数变大，出现类似铁电体的弛豫现象．
MnO2 was introduced to NiCuZn ferrite. The effects of Mn substitution on the magnetic properties and microstructure of the (Ni0.2 Cu0.2 Zn0.6)1.03 (Fe2O3)0.97+0.97xMnO2 ferrite (x=0.1～0.5) were investigated. Mn content increases the initial permeability, but excess Mn content will result in the formation of a secondary phase. And the initial permeability depending on temperatures is strongly affected by Mn content too. When x≥ 0.4, the temperature coefficient of initial permeability increases quickly, which just like the relaxant phenomenon in ferroelectrics.
参考文献
| [1] | Nakamura T. J. Magn. Magn. Mater., 1997, 168: 285--291. [2] Sung H M, Chen C J, Ko W S, et al. IEEE Trans. Magn., 1994, 30 (6): 4906--4908. [3] Hsu J Y, Ko W S, Sen H D, et al. IEEE Trans. Magn., 1994, 30 (6): 4875--4877. [4] Nakamura T, Okana Y. J. Phys., IV Franc 7 1997. CI-91--92. [5] Zhang H G, Ma Z W, Zhou J, et al. J. Magn. Magn. Mater., 2000, 213: 304--308. [6] Byun T Y, Byeon S C, Hong K S, et al. IEEE Trans. Magn., 1999, 35 (5): 3445--3447. [7] Seo S H, Oh J H. IEEE Trans. Magn., 1999, 35 (5): 3412--3414. [8] Nam J H, Hur W G, Oh J H. J. Appl. Phys., 1997, 81 (8): 2B 4794--4796. |
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