Ultraviolet laser action in ferromagnetic Zn1-xFexO nanoneedles.
Yang, H. Y.
Yu, S. F.
Lau, S. P.
Herng, T. S.
Date of Issue2009
School of Electrical and Electronic Engineering
Fe-doped ZnO nanoneedles (NDs) were fabricated by an Ar+ ion sputtering technique operated at room temperature. The as-grown samples show both ferromagnetic and lasing properties. The saturated magnetization moment was measured from 0.307 to 0.659 emu cm-3 at the field of 10 kOe with various Fe concentrations. Intense ultraviolet random lasing emission was observed from Zn1 - xFexO NDs at room temperature. The X-ray photoelectron spectroscopy result reveals that the doped Fe atoms occupy the Zn sites and lead to a decrease in oxygen deficiency.
DRNTU::Engineering::Electrical and electronic engineering
Nanoscale research letters
© 2009 The Author(s).