The Study of Electronic Materials in the Double Hexagonal Co-Fe Alloy System with the Easy Basal-Plane and Fine Magnetic Domains

1. 研究了HCP和DHCP Co-Fe合金冷轧诱导的单轴磁各向异性K_<ur>的轧辊减径和浓度依赖性。当Co和Co-3.0% fe -2轧制量分别为10-20%和10-20%时，Kur最大值为3X10 ^5 erg/cm^3。在室温下，含铁量小于1.2%的HCP相和含铁量大于1.2%的DHCP相合金的单轴各向异性易向分别为与轧制方向垂直（K_<ur><0）和平行（K_<ur>>0）。冷轧引起的单轴磁各向异性与HCP和DHCP Co-Fe合金的磁各向异性与铁浓度的关系非常相似。这两种磁各向异性都被认为与磁晶各向异性和产生的织构有关。研究了Fe-Co/ZnO溅射多层膜的软磁性能与厚度和成分的关系。对应于a - c磁导率（10MHz），分别在20 wt% Co和84 wt% Co附近出现峰值（约900和约700）。研究了fe_ <1-x> Co_x) _<1-y> Nb_y（重量分数0= x =1.0, 0= y =0.2）溅射薄膜的软磁性能与成分和退火温度的关系。在773K下退火3600S时，薄膜在y=0.05和X=0.3 ~ 0.8时的对流作用力最小为400 a /m。相应的磁导率为800，饱和磁通密度为2T。

1. Tthe roll reduction and concentration dependences of the uniaxial magnetic anisotropy induced by cold-rolling, K_<ur>, were investigated for HCP and DHCP Co-Fe alloys. The maximum value of Kur was 3X10 ^5 erg/cm^3 at 10-20% roll reduction for Co and Co-3.0% Fe.2. The easy direction of the uniaxial anisotropy was perpendicular (K_<ur><0) and parallel (K_<ur>>0) to the rolling direction for the alloys containing less than 1.2%Fe (HCP phase) and more than 1.2% Fe (DHCP phase) at room temperature, respectively.3. The Fe concentration dependence of the uniaxial magnetic anisotropy induced by cold rolling is quite similar to that by magnetic annealing observed in HCP and DHCP Co-Fe alloys. Both induced magnetic anisotropies are believed to be associated with the magnetocrystalline anisotropy and the produced texture.4. The dependence of soft magnetic properties on the thickness and composition was investigated for sputtered Fe-Co/ZnO multilayers. The corrcive force corresponds with the a c permeability (10MHz), which shows the peaks (about 900 and about 700) around 20 and 84 wt% Co, respectively.5. The dependence of soft magnetic properties on the composition and annealing temperature was studied for sputtered (Fe _<1-x> Co_x) _<1-y> Nb_y (0= x =1.0, 0= y =0.2 in weight fraction) films. The corrcive force of the films annealed at 773K for 3600S exhibits a minimum of 400 A/m around y=0.05 and X=0.3-0.8. The corresponding permeability and saturation magnetic flux density are 800 and 2T, respectively.