Soft magnetic properties and microstructure of Fe65Co35 thin films with different underlayers
Soft magnetic properties and microstructure of Fe65Co35 thin films with different underlayers
复制标题
DOI：
10.1002/pssa.200521083
复制
发表时间：
2006-04
期刊：
影响因子：
--
通讯作者：
Yu Fu;Xiao-ying Cheng;Zheng-yin Yang
中科院分区：
文献类型：
--
作者：
Yu Fu;Xiao-ying Cheng;Zheng-yin Yang
通过在 Co93Fe7、Ni80Fe20、Cu 和 Fe 底层上共溅射获得了具有良好面内单轴各向异性的高磁矩软磁 Fe65Co35 薄膜。厚度为100 nm的单层Fe65Co35薄膜表现出磁各向异性。沿易轴H ce 的矫顽力和沿难轴H ch 的矫顽力分别等于3.3 kA/m和2.1 kA/m。通过使用底层，Fe65Co35 薄膜的软磁性能得到很大改善。具有 Ni80Fe20、Co93Fe7 和 Cu 底层的 Fe65Co35 薄膜的 H ce 和 H ch 可分别降低至 0.9–1.1 kA/m 和 0.08–0.20 kA/m。对于具有 Fe 底层的薄膜，H ce 和 H ch 分别降低至 1.1 kA/m 和 0.6 kA/m。在 Co93Fe7、Ni80Fe20 和 Fe 底层的情况下，当 t > 1 nm 时，薄膜的矫顽力并不显着依赖于底层的厚度 t。而在铜底层的情况下，薄膜的矫顽力随着底层厚度的增加而发生显着变化。结果表明，双层底层/Fe65Co35 薄膜的织构取决于底层的材料和厚度。通过AFM和MFM研究了底层对薄膜表面形貌和微磁结构的影响。研究表明，利用底层对Fe65Co35薄膜的结构进行改性是提高其软磁性能的重要途径。 （© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
High‐moment soft magnetic Fe65Co35 thin films with well in‐plane uniaxial anisotropy were obtained by cosputtering on Co93Fe7, Ni80Fe20, Cu and Fe underlayers. The single‐layer Fe65Co35 film with thickness of 100 nm shows a magnetic anisotropy. The coercivity along easy axis H ce and that along hard axis H ch are equal to 3.3 kA/m and 2.1 kA/m, respectively. The soft magnetic properties of Fe65Co35 films were much improved by using an underlayer. The H ce and H ch of Fe65Co35 films with Ni80Fe20, Co93Fe7 and Cu underlayers can be reduced to 0.9–1.1 kA/m and 0.08–0.20 kA/m, respectively. For films with Fe underlayer, the H ce and H ch reduced to 1.1 kA/m and 0.6 kA/m, respectively. In the case of Co93Fe7, Ni80Fe20 and Fe underlayers, the coercivity of films did not depend remarkably on the thickness t of underlayer at t > 1 nm. While in the case of Cu underlayer, the coercivity of films changed remarkably with increasing underlayer thickness. It was shown that the texture of double‐layered underlayer/Fe65Co35 films is dependent on the material and the thickness of underlayer. The influence of the underlayer on the surface morphology and micro‐magnetic structure of films were investigated by AFM and MFM. It was suggested that the modification of the structure of Fe65Co35 films by using an underlayer is an important way to improve their soft magnetic properties. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)