Room Temperature Ferromagnetism in Nanostructure Cu-Doped ZnO

  • Key Laboratory of Excited State Processes,Changchun Institute of Optics,Fine Mechanics,and Physics,Chinese Academy of Sciences,Changchun 130033,China
  • Graduate University of the Chinese Academy of Sciences,Beijing 100049,China
  • School of Physics,Jilin Norma
  • Key Laboratory of Excited State Processes,Changchun Institute of Optics,Fine Mechanics,and Physics,Chinese Academy of Sciences,Changchun 130033,China
  • School of Physics,Jilin Normal University,Siping 136000,China
  • School of Physics,Jilin Normal University,Siping 136000,China

Key words: dilute magnetic semiconductor Cu-doped ZnO ferromagnetism

Abstract: A series of Zn1-xCuxO(x=0.01,0.02,0.03,0.04) nanoparticles were synthesized from Zn nitrate and Cu nitrate reduced by citrate.X-ray diffraction (XRD) shows that Zn1-xCuxO samples are single phase with ZnO-like wurtzite structure.Magnetic measurements indicate that Zn1-xCuxO(x=0.01,0.02,0.03,0.04) are ferromagnetic at room temperature.XRD,transmission electron microscope (TEM) analysis,and X-ray photoelectron spectroscopy (XPS) reveal that no ferromagnetic-related secondary phase was detected.The ferromagnetism in Zn1-xCuxO (x≤0.04) is intrinsic.

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