Mn-doped ZnO and (Mn, Cu)-doped ZnO thin films: Does the Cu doping indeed play a key role in tuning the ferromagnetism?
Mn-doped ZnO and (Mn, Cu)-doped ZnO thin films: Does the Cu doping indeed play a key role in tuning the ferromagnetism?
复制标题
DOI：
10.1063/1.1875752
复制
发表时间：
2005-02
影响因子：
4
通讯作者：
N. H. Hong;V. Brizé;J. Sakai
中科院分区：
文献类型：
--
作者：
N. H. Hong;V. Brizé;J. Sakai
采用脉冲激光沉积技术在R切Al2O3基片上制备了Zn0.9Mn0.1O和Zn0.85Mn0.1Cu0.05O薄膜。在650 °C和0.1Torr的氧气压力下制备的Zn 0.9Mn 0.1O和Zn 0.85Mn 0.1Cu 0.05O薄膜都显示出高于室温的铁磁性（FM）。看来，通过施加适当的条件，单独掺杂Mn可以在ZnO本身中诱导FM，而与Cu共掺杂可能在某些特定情况下在一定程度上增强磁矩，但并不像理论预测的那样非常关键。生长条件可能对铁磁样品的形成起更重要的作用。
Zn0.9Mn0.1O and Zn0.85Mn0.1Cu0.05O thin films were grown by the pulsed laser deposition technique on R-cut Al2O3 substrates under various conditions. Both Zn0.9Mn0.1O and Zn0.85Mn0.1Cu0.05O films that were fabricated at 650 °C under an oxygen pressure of 0.1 Torr show ferromagnetism (FM) above room temperature. It appears that by applying appropriate conditions, doping Mn alone can induce FM in ZnO itself, while co-doping with Cu might enhance the magnetic moment for some extent in some specific cases, but not very crucially as theories have predicted. Growth conditions likely play more important roles to result in ferromagnetic samples.