Abstract
ZnO hexagonal bipods have been synthesized by a hydrothermal method using NaAOT as template. Co-doped ZnO bipods show obvious room temperature ferromagnetic behaviours. Phase composition, microstructure, and x-ray photoemission spectra analysis indicate that there is no Co cluster exsisting in the samples, and the ferromagnetism observed in Co-doped ZnO bipods should be intrinsic. Photoluminescence spectra indicate there exist a large amount of oxygen vacancies in the ZnO bipods. The ferromagnetism can be tuned by the content of Co ions, which should be closely realted to the magnetic coupling interaction between the Co2+ 3d spins and the electrons trapped at oxygen vacancies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
