Electrodeposition and room temperature ferromagnetic anisotropy of Co and Ni-doped ZnO nanowire arrays
Electrodeposition and room temperature ferromagnetic anisotropy of Co and Ni-doped ZnO nanowire arrays
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DOI：
10.1063/1.2058222
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发表时间：
2005-09-26
影响因子：
4
通讯作者：
Gibson, UJ
中科院分区：
文献类型：
--
作者：
Cui, JB;Gibson, UJ
在90℃的电化学条件下合成了钴和镍掺杂ZnO纳米线阵列。能量色散x射线光谱和x射线衍射表明，掺杂剂被掺入到纤锌矿结构的ZnO中。在室温下，1.7% Co和2.2% ni掺杂的ZnO纳米线具有垂直或平行于线轴的各向异性铁磁性，这取决于线的几何形状和密度。各向异性磁性的解释是纳米线之间的自退磁和静磁耦合之间的竞争。(C) 2005美国物理研究所。
Cobalt and nickel doped ZnO nanowire arrays were synthesized by an electrochemical process at a temperature of 90 degrees C. Energy dispersive x-ray spectroscopy and x-ray diffraction show that the dopants are incorporated into the wurtzite-structure ZnO. Anisotropic ferromagnetism with an easy direction of magnetization either perpendicular or parallel to the wire axis, depending on the wire geometry and density, was observed in 1.7% Co and 2.2% Ni-doped ZnO nanowires at room temperature. The anisotropic magnetism was explained in terms of a competition between self-demagnetization and magnetostatic coupling among the nanowires. (C) 2005 American Institute of Physics.