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首页> 外文期刊>Journal of Crystal Growth >Structural and magnetic properties of Co_(68)Fe_(24)Zr_8/Al_2O_3 multilayers
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Structural and magnetic properties of Co_(68)Fe_(24)Zr_8/Al_2O_3 multilayers

机译:Co_(68)Fe_(24)Zr_8 / Al_2O_3多层膜的结构和磁性

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摘要

The structural and magnetic properties of Co_(68)Fe_(24)Zr_8/Al_2O_3 multilayers grown by using magnetron sputtering were investigated with X-ray reflectivity, transmission electron microscopy and magneto-optical Kerr effect. The Co_(68)Fe_(24)Zr_8 form amorphous islands when the nominal thickness of the Co_(68)Fe_(24)Zr_8 layers is 10 A, exhibiting an isotropic superparamagnetic behavior. Continuous layers with mostly a nano-crystalline structure are instead formed when the nominal thickness of the Co_(68)Fe_(24)Zr_8 layers is increased to 20 A. The continuous layers exhibit random, in-plane, magnetic anisotropy resulting from the growth process. However, induced uniaxial anisotropy is obtained when growing the sample in the presence of an applied magnetic field, regardless of the combination of amorphous and nano-crystalline material.
机译:利用X射线反射率,透射电镜和磁光克尔效应研究了磁控溅射制备的Co_(68)Fe_(24)Zr_8 / Al_2O_3多层膜的结构和磁性。当Co_(68)Fe_(24)Zr_8层的标称厚度为10 A时,Co_(68)Fe_(24)Zr_8形成非晶岛,表现出各向同性的超顺磁行为。当Co_(68)Fe_(24)Zr_8层的标称厚度增加到20 A时,将形成具有大部分纳米晶体结构的连续层。连续层表现出由生长引起的随机的面内磁各向异性处理。但是,在无定形和纳米晶体材料的组合下,在存在外加磁场的情况下生长样品时,都会获得诱导的单轴各向异性。

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