Effect of Cu co-doping on the magnetism of Zn0.95Co0.05O films
Zn0.95-xCo0.05CuxO (x=0-8%) thin films were fabricated on Si (111) substrate by reactive magnetron sputtering method.Detailed characterizations indicate that the doped Cu ions substituted the Zn2+ ions in ZnO lattice.The doped Cu ions are in +1 and +2 mixture valent state.The ferromagnetism of the Zn0.95-xCo0.05CuxO film increases gradually with the increasing of the Cu+ ions concentration till x=6%,but decreases for higher Cu concentration.Experimental results indicate the increase of ferromagnetism is not owing to the magnetic contribution of Cu+ ions themselves,but owing to the enhancement of magnetic interaction between Co2+ ions,which suggests that p-type doping of Cu+ ions play an important role in mediating the ferromagnetic coupling between Co ions.
Zn0.95-xCo0.05CuxO films magnetic semiconductors BMP model co-doping magnetron sputtering
Li Jianjun Zhu Jinbo Zhang Liting Liu Yin Hao Weichang
Department of Materials Science and Engineering, Anhui University of Science and Technology,Huainan Department of Materials Science and Engineering, Anhui University of Science and Technology,Huainan Center of Materials Physics and Chemistry, Beihang University, Beijing 100191, China
国际会议
上海
英文
198-198
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）