Effects of dopants on magnetic properties of Cu-doped ZnO thin films
Effects of dopants on magnetic properties of Cu-doped ZnO thin films
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DOI：
10.1007/s10853-011-5830-z
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发表时间：
2011
影响因子：
4.5
通讯作者：
Hailing Yang;Xiaoguang Xu;Shizhe Wu;Kai Wu;Chao‐Wu Ai;J. Miao;Yong Jiang
中科院分区：
文献类型：
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作者：
Hailing Yang;Xiaoguang Xu;Shizhe Wu;Kai Wu;Chao‐Wu Ai;J. Miao;Yong Jiang
我们报告了通过溶胶-凝胶技术合成的铜掺杂 ZnO (ZnO: Cu) 薄膜的室温铁磁性 (FM) 的观察。当施主Al3+阳离子被引入ZnO:Cu薄膜时，饱和磁化强度迅速下降。 Cu 2p 核级 X 射线光电光谱表明 FM 与 Cu2+ 阳离子（3d9 配置）强相关。为了进一步研究FM和受主之间的关系，还将Na+阳离子引入到ZnO:Cu薄膜中以增加饱和磁化强度。 (Cu, Na) 共掺杂 ZnO 中 FM 的增强被认为是由于离域空穴和自旋分裂 Cu 3d 态之间的杂化所致。
We report the observation of room temperature ferromagnetism (FM) in Cu-doped ZnO (ZnO: Cu) thin films synthesized by sol–gel technique. While donor Al3+cations are introduced into the ZnO: Cu films, the saturation magnetization decreases rapidly. Cu 2pcore-level X-ray photoelectronic spectra demonstrate that the FM is strongly correlated with Cu2+cations (3d9configuration). To further study the relationship between the FM and acceptors, Na+cations are also introduced into the ZnO: Cu films to increase the saturation magnetization. The enhanced FM in the (Cu, Na)-codoped ZnO is suggested to be due to the hybridization between delocalized holes and spin-split Cu 3dstates.