Correlated d(0) ferromagnetism and photoluminescence in undoped ZnO nanowires

We report the correlated d(0) ferromagnetism and photoluminescence in undoped single-crystalline ZnO nanowires synthesized by using a vapor transport method. We systematically tune the oxygen deficiency in the ZnO nanowires from 4% to 20% by adjusting the growth conditions, i.e., selecting different catalyst (Au or Ag) and varying the growth temperature. Our study suggests that oxygen vacancies induce characteristic photoluminescence and significantly boost the room-temperature ferromagnetism. Such undoped ZnO nanowires with tunable magnetic and optical properties are promising to find applications in multifunctional spintronic and photonic nanodevices.Original Publication:Guozhong Xing, Dandan Wang, Jiabao Yi, Li-Li Yang, Ming Gao, Mi He, Jinghai Yang, Jun Ding, Tze Chien Sum and Tom Wu, Correlated d(0) ferromagnetism and photoluminescence in undoped ZnO nanowires, 2010, APPLIED PHYSICS LETTERS, (96), 11, 112511.http://dx.doi.org/10.1063/1.3340930Copyright: American Institute of Physicshttp://www.aip.org