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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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(Fe1-xCox)78.4Nb2.6Si9B9Cu1纳米晶软磁合金的结构与高频磁性
, PP. 281-285
Keywords: 纳米晶,晶体相,非晶相,复数磁导率,初始磁导
Abstract:
研究了(Fe1-xCox)78.4Nb2.6Si9B9Cu1（x=0.35、0.5、0.65）合金在真空条件下（1×10-3Pa）490℃等温退火30min后的结构与高频磁性。XRD分析表明，非晶(Fe1-xCox)78.4Nb2.6Si9B9Cu1合金490℃退火后析出晶粒尺寸约15nm的α-FeCo(Si)软磁晶体相，随Co含量的增加，α-FeCo(Si)晶格常数变小，晶粒尺寸略有增大。利用Pseudo-Voigt2函数模拟了晶体相体积百分数。由晶格常数及晶体相体积百分数估算了剩余非晶相的成份。用阻抗分析仪测量了纳米晶(Fe1-xCox)78.4Nb2.6Si9B9Cu1合金在10kHz~10MHz范围的磁谱曲线。结果表明，随Co含量的增加，合金的初始磁导率降低，而共振频率明显提高，用畴壁运动方程及畴壁钉扎理论解释了Co含量的变化对纳米晶合金高频磁性的影响规律。
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