title: Optical and magnetic properties of Ni-doped ZnO nanocones.
abstract: Ni-doped ZnO flower-like nanocones with wurzite structures were produced by oxidative evaporation of Zn and Ni powders. The Ni doping did not change the ZnO wurtzite structure. Raman scattering indicated that the normal lattice vibration modes are related to the hexagonal ZnO. Ni clusters and Ni oxides phases did not existed in the sample as characterized by XRD, XPS, and TEM. Upon excitations the nanocones could emit strong green light at 525 nm, which can be directly observed with a digital camera. The magnetic measurement indicated that the Ni-doped ZnO nanocone was high-Curie-temperature magnetic semiconductor.
authors.affiliation: Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore.
authors.forename: Hui
authors.initials: H
authors.lastname: Pan
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Ni
authors.forename: Jiabao
authors.initials: J
authors.lastname: Yi
authors.forename: Xinyu
authors.initials: X
authors.lastname: Gao
authors.forename: Chuanjun
authors.initials: C
authors.lastname: Liu
authors.forename: Yuan Ping
authors.initials: YP
authors.lastname: Feng
authors.forename: Jun
authors.initials: J
authors.lastname: Ding
authors.forename: Jianyi
authors.initials: J
authors.lastname: Lin
authors.forename: Andrew Thye Shen
authors.initials: AT
authors.lastname: Wee
authors.forename: Zexiang
authors.initials: Z
authors.lastname: Shen
mesh_terms: D003460:Crystallization / Q000379:methods*; D008027:Light; D046911:Macromolecular Substances / Q000737:chemistry; D008280:Magnetics; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D009532:Nickel / Q000737:chemistry*; D010316:Particle Size; D012542:Scattering, Radiation; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D046911:Macromolecular Substances; D009532:Nickel; D015034:Zinc Oxide