Manganese zinc ferrite material and preparation method thereof: Fid-Bau Portal

Manganese zinc ferrite material and preparation method thereof

LI KAIXUAN / ZHU YONG / WANG CHAOMING / GE WEIKANG

The invention relates to a manganese zinc ferrite material and a preparation method thereof, the manganese zinc ferrite material comprises main components and auxiliary components, the main components comprise Fe2O3, ZnO and MnO, and the auxiliary components comprise CoO, CaO, Bi2O3 and MoO; and in the main components, the content of Fe2O3 is 52.0 to 53.0 mol percent, the content of ZnO is 18.0 to 19.0 mol percent, and the content of MnO is 28.0 to 30.5 mol percent in terms of mole percent. According to the manganese-zinc ferrite material, the initial permeability mu i is greater than or equal to 12000 in a wide temperature range of 0-145 DEG C, and the manganese-zinc ferrite material has a relatively low temperature coefficient in the temperature range; the magnetic conductivity does not drop under the high frequency of 300kHz, and mu i is greater than or equal to 9000; the Curie temperature Tc is greater than 145 DEG C, so that the stability of the manganese-zinc ferrite material applied to the field of automotive electronics or a conventional anti-EMI common-mode filter is greatly improved.

本发明涉及一种锰锌铁氧体材料及其制备方法，所述锰锌铁氧体材料包括主成分和辅助成分，所述主成分包括Fe2O3、ZnO和MnO，所述辅助成分包括CoO、CaO、Bi2O3和MoO；所述主成分中，以摩尔百分比计，Fe2O3含量为52.0～53.0mol％，ZnO含量为18.0～19.0mol％，MnO含量为28.0～30.5mol％。本发明锰锌铁氧体材料在0～145℃的宽温度范围内，初始磁导率μi≥12000，且在该温度范围内，具有较低的温度系数；高频率300kHz下磁导率不跌落，μi≥9000；居里温度Tc＞145℃，极大提高锰锌铁氧体材料应用在汽车电子领域或常规抗EMI共模滤波器中的稳定性。

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