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

1.本文研究了HCP和DHCP Co-Fe合金冷轧诱导的单轴磁各向异性K_i随压下量和浓度的变化关系<ur>。对于Co和Co-3.0%Fe，在10-20%压下率下，Kur的最大值为3 × 10 ^5 erg/cm ^3。对于<ur><ur>Fe含量小于1.2%（HCP相）和大于1.2%（DHCP相）的合金，室温下单轴各向异性的易取向方向分别为垂直于轧制方向（K &lt;0）和平行于轧制方向（K&gt;0）.冷轧引起的单轴磁各向异性的Fe浓度依赖性与HCP和DHCP Co-Fe合金中观察到的磁退火非常相似。这两种感生磁各向异性被认为与磁晶各向异性和所产生的织构有关。研究了溅射Fe-Co/ZnO多层膜的软磁性能与膜厚和成分的关系。矫顽磁力对应于a-c磁导率（10 MHz），其分别在20和84wt%Co附近显示峰值（约900和约700）。研究了溅射（Fe _<1-x>Co_x）_<1-y>Nb_y（0= x =1.0，0= y =0.2）薄膜的软磁性能与成分和退火温度的关系。在773 K、3600 S退火的薄膜，在y=0.05、X=0.3-0.8附近，其矫顽力最小为400 A/m。相应的磁导率和饱和磁通密度分别为800和2 T。

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.