| Autor: |
He Xue-Min, Yan Shi-Ming, Li Zhi-Wen, Zhang Xing, Song Xue-Yin, Qiao Wen, Zhong Wei, Du You-Wei |
| Předmět: |
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| Zdroj: |
Chinese Physics B; Dec2015, Vol. 24 Issue 12, p1-1, 1p |
| Abstrakt: |
High-performance submicron-scaled NiCuZn ferrites are prepared by the solid-state reaction method through using CuO as additive. In the synthesis process, a mixture of superfine powder is sintered at 900 °C for 3 h, and the obtained product is NiZn-ferrite with spinel structure. We observe that the particle size increases with raising the sintering temperature. The NiCuZn ferrite with relatively uniform size and granular shape has the best performance: its coercivity is 14 Oe (1 Oe=79.5775 A·m−1) and saturation magnetization is 48 emu/g. We also study the effects of particle size, magnetocrystalline anisotropy, and microstructure on coercivity. The method presented here is convenient and economical for producing the high-permeability ferrite powders. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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