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界面对Fe_(65)Co_(35)薄膜微结构和软磁性的影响
Effect of interface on microstructure and soft magnetic properties of Fe_(65)Co_(35) thin films
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摘要: 用不同的材料(Co_(93)Fe_7和Fe)作衬底层,利用磁控溅射法成功制备了Fe_(65)Co_(35)(主层),衬底层结构的双层薄膜.通过X射线衍射和磁性测量发现,在不同的衬底上沉积的Fe_(65)Co_(35)薄膜的织构不同,并且(200)取向的Fe_(65)Co_(35),薄膜的面内各向异性和软磁性优于(110)取向的Fe_(65)Co_(35)薄膜.通过典型样品的穆斯堡尔谱分析发现,Fe_(65)Co_(35)薄膜的磁 化强度矢量具有一定的垂直分量,并且当Fe_(65)Co_(35)薄膜为(110)取向时磁化强度矢量的垂直分量比(200)取向时要大.进一步的研究发现,这种现象是由Fe_(65)Co_(35)薄膜与衬底层接触界面上应力诱导的界面各向异性导致的.
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关键词:
- Fe_(65)Co_(35)薄膜 /
- 衬底层 /
- 界面各向异性 /
- 软磁性
Abstract: Bilayer films with Fe_(65) Co_(35) main layedunderlayer structure were successfully prepared by magnetron sputtering on different underlayers (Co_(93) Fe_7 and Fe). X-ray diffraction (XRD) analysis and magnetic measurements show that Fe_(65) Co_(35) thin films deposited on different underlayers have different textures. Moreover, the soft magnetic properties of Fe_(65) Co_(35) thin films with (200) texture are better than that of Fe_(65) Co_(35) thin films with (110) texture. Investigation of several typical samples by conversion electron Mossbauer spectrum (CEMS) reveals that the vector of magnetization of Fe65 Co35 thin films have a little deviation from the film plane, and the deviation from the film plane of Fe_(65) Co_(35) thin films with (110) texture are bigger than that of Fe_(65) Co_(35) thin films with (200) texture. Further study exhibits that this phenomenon is caused by the interface anisotropy induced by magnetoelastic anisotropy at the interface between Fe_(65) Co_(35) thin film and underlayer. -
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