Cu-doping induced ferromagnetism in ZnO nanowires.
Cu-doped and undoped ZnO nanowires have been successfully fabricated at 600 degrees C using a vapor transport approach. Comprehensive structural analyses on as-fabricated nanowires reveal highly crystalline ZnO nanowires with 0.5 at. % of substitutional Cu doping. Ferromagnetism has been observed in Cu-doped ZnO nanowires but not in undoped ones, which is probably associated with defects involving both Cu dopants and Zn interstitials.
Xu
Congkang
C
Department of Mechanical Engineering, Center for Advanced Microelectronics Manufacturing, Binghamton University, State University of New York, P.O. Box 6000, Binghamton, New York 13902, USA. cxu@binghamton.edu
Yang
Kaikun
K
Huang
Liwei
L
Wang
Howard
H