Ordered CoFe2O4 nanowire arrays with preferred crystal orientation and magnetic anisotropy

Ordered CoFe2O4 nanowire arrays with preferred crystal orientation and magnetic anisotropy
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具有择优晶体取向和磁各向异性的有序CoFe2O4纳米线阵列

DOI:
10.1016/j.electacta.2009.05.012
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发表时间:
2009-10
影响因子:
6.6
通讯作者:
Fu, J.L.
Fu, J.L.
中科院分区:
材料科学2区
文献类型:
--
作者:
Fan, X.L.;Gao, B.;Xue, D.S.;Sui, W.B.;Xu, Y.;Guo, D.W.;Gao, D.Q.;Fu, J.L.

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将Fe2+和Co2+电沉积到阳极氧化铝(AAO)模板中并进一步氧化,制备了cofe2o4纳米线阵列。纳米线的相结构为立方尖晶石型,XRD结果显示沿纳米线轴方向有完美的择优取向。与其他方法合成的cofe2o4纳米线阵列相比,磁滞回线表明该纳米线阵列具有单轴磁各向异性,由于其形状各向异性较大,易于沿纳米线轴方向磁化。该方法为制备具有单轴磁各向异性的氧化纳米线提供了一种简便的技术。
CoFe2O4nanowire arrays were fabricated by electrodeposition of Fe2+and Co2+into anodic aluminum oxide (AAO) templates and further oxidization. The phase structure of the nanowires is cubic spinel-type, and the XRD result exhibits perfect preferred crystallite orientation along the nanowire axes. Compared with CoFe2O4nanowire arrays synthesized by other methods, the magnetic hysteresis loops demonstrate that the arrays of nanowires exhibit uniaxial magnetic anisotropy with easy magnetization direction along the nanowire axes owing to the large shape anisotropy. This approach provides a facile technology to fabricate oxide nanowires with uniaxial magnetic anisotropy.
DOI: 10.1126/science.258.5083.783
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