摘要
The ion implantation technique was employed to study the structural,magnetic,and optical properties of Co-doped crystalline ZnO.The photoluminescence measurements indicated that the center of green emission of implanted samples shifts gradually from 510 nm to 531 nm with an increase of Co concentrations.All implanted samples are ferromagnetic at room temperature with a saturation magnetization from 6.89×10-5 to 2.31×10-4 emu.The possible mechanisms on the observed ferromagnetism were discussed.
The ion implantation technique was employed to study the structural,magnetic,and optical properties of Co-doped crystalline ZnO.The photoluminescence measurements indicated that the center of green emission of implanted samples shifts gradually from 510 nm to 531 nm with an increase of Co concentrations.All implanted samples are ferromagnetic at room temperature with a saturation magnetization from 6.89×10-5 to 2.31×10-4 emu.The possible mechanisms on the observed ferromagnetism were discussed.
基金
supported by the National Natural Science Foundation of China (Grant No. 10375028)
the Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education,Lanzhou University,and the SRF for ROCS,SEM
