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利用电化学沉积方法在阳极氧化铝模板中制备了Fe89·7P10·3非晶合金纳米线阵列.利用x射线衍射仪、透射电子显微镜、振动样品磁强计和穆斯堡尔谱仪研究了样品的结构和磁性,发现纳米线阵列是非晶结构,且拥有垂直磁各向异性和高的矫顽力,Hc=3·04×104A/m.纳米线内部的平均超精细场和平均同质异能移分别为2·15×106A/m和0·07mm/s;而纳米线末端的平均超精细场(2·33×106A/m)大于内部的值,平均同质异能移(0·04mm/s)小于内部的值.另外,纳米线内部Fe原子磁矩与线轴的夹角约为16°,而在纳米线末端Fe原子磁矩与线轴的夹角约为28°.这些结果表明,由于形状各向异性,在纳米线中实现了无序非晶合金磁矩的有序排列.
Fe89.7P10.3 amorphous alloy nanowire arrays were prepared by electrochemical deposition in anodic alumina template.The samples were characterized by X-ray diffraction, transmission electron microscopy, vibrating sample magnetometer and Mossbauer spectrometer The results show that the nanowire arrays are amorphous and possess perpendicular magnetic anisotropy and high coercivity, Hc = 3.04 × 104 A / m. The average superfine field and average isotropy inside the nanowire The energy shift was 2.15 × 106 A / m and 0.07 mm / s, respectively. The average hyperfine field (2.33 × 106 A / m) at the end of the nanowire was larger than the internal value. The average isomerization shift 04mm / s) is less than the internal value.In addition, the magnetic moment of Fe atoms in the nanowire is about 16 ° with the bobbin axis, and the angle between the magnetic moment of the Fe atom and the bobbin at the end of the nanowire is about 28. These results indicate Due to the anisotropy of shape, an ordered arrangement of the magnetic moments of the disordered amorphous alloy is realized in the nanowires.