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材料研究学报  2005, Vol. 19 Issue (5): 550-554    
  论文 本期目录 | 过刊浏览 |
CuO、MoO3和WO3掺杂对NiZn铁氧体磁性能的影响
苏桦;张怀武;唐晓莉
电子科技大学;成都610054
Effects of CuO、MoO3 and WO3 dopping on magnetic properties of NiZn ferrites
引用本文:

苏桦; 张怀武; 唐晓莉 . CuO、MoO3和WO3掺杂对NiZn铁氧体磁性能的影响[J]. 材料研究学报, 2005, 19(5): 550-554.

全文: PDF(698 KB)  
摘要: 研究了CuO、MoO3和WO3掺杂对NiZn铁氧体电磁性能的影响. 研究表明, 适量的CuO掺杂能提高材料烧结密度并降低磁晶各向异性常数, 从而提高材料的起始磁导率, 但居里温度也有一定程度的下降. 当主配方中CuO含量(摩尔分数)为4%时能最好的兼顾材料高磁导率和高居里温度的要求. 而MoO3和WO3掺杂则均能引起晶界附近阳离子空位增多, 从而加速晶界移动, 促进晶粒尺寸增大, 进而提高材料的起始磁导率. 同时, 由于W离子具有较强的占据铁氧体A位替代Fe3+的趋势, 需要更大的掺杂量才能达到磁导率的峰值, 其居里温度和饱和磁感应强度也低于相应MoO3掺杂的材料.
关键词 无机非金属材料起始磁导率居里温度    
Key words
收稿日期: 1900-01-01     
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