The effect of nitrogen incorporation on the magnetic properties of carbon-doped ZnO

The effect of nitrogen incorporation on the magnetic properties of carbon-doped ZnO
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氮掺入对碳掺杂ZnO磁性能的影响

DOI:
10.1088/0022-3727/41/15/155005
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发表时间:
2008-08
影响因子:
3.4
通讯作者:
Ye, X.J.
Ye, X.J.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Yang, Z.X.;Qi, X.S.;Jin, C.Q.;Song, H.A.;Au, C.T.;Xu, M.H.;Zhong, W.;Du, Y.W.;Ye, X.J.

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采用标准固相反应法制备了碳掺杂ZnO粉体样品,并分别在氩气和氮气气氛下进行烧结。根据拉曼光谱研究的结果,在氮气中烧结的样品显示出较低的D-键(无序)和G-键(石墨)的浓度,可能是氮掺入到碳掺杂的ZnO样品的结果。所有样品在室温下都是铁磁性的,与氩气中烧结的样品相比,氮气中烧结的样品具有较低的磁矩。我们发现电子介导机制比空穴介导机制更适合于解释碳掺杂ZnO材料的铁磁性。
Samples of carbon-doped ZnO powders were prepared by the standard solid-state reaction method and sintered separately in argon and nitrogen atmospheres. According to the results of Raman spectroscopic investigation, the samples sintered in nitrogen showed lower D-bond (disordered) and G-bond (graphitic) concentrations, plausibly a result of nitrogen incorporation into the carbon-doped ZnO sample. All the samples are ferromagnetic at room temperature, and compared with those sintered in argon, those sintered in nitrogen have a lower magnetic moment. We found that the electrons-mediated mechanism is more suitable than the holes-mediated one for the explanation of ferromagnetism of carbon-doped ZnO materials.
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