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OALib Journal期刊
ISSN: 2333-9721
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强磁场下不同晶粒尺寸Fe薄膜生长模式演变及其对磁性能的影响*
DOI: 10.11900/0412.1961.2015.00084, PP. 799-806
Keywords: 强磁场,Fe薄膜,纳米晶,柱状生长,磁性能
Abstract:
采用强磁场下物理气相沉积的方法,通过提高蒸发源温度获得晶粒尺寸逐渐降低的纳米晶Fe薄膜,研究了强磁场对不同晶粒尺寸Fe薄膜生长和磁性能的影响.结果表明,当蒸发源温度为1440℃时,Fe薄膜的晶粒细小,强磁场使薄膜从层状生长变成了柱状生长,有效降低了薄膜缺陷.当蒸发源温度为1400和1350℃时,Fe薄膜的晶粒较粗大,强磁场不能改变其柱状生长方式,但是却提高了柱的宽度.强磁场提高了Fe薄膜的平均晶粒尺寸以及颗粒(由晶粒构成)尺寸、降低了薄膜表面粗糙度.随着晶粒尺寸的降低,强磁场提高Fe薄膜矫顽力、饱和磁化强度和剩磁比的能力增强.
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