铁锌氧化物纳米针的紫外激光作用。

Ultraviolet Laser Action in Ferromagnetic Zn1-xFexO Nanoneedles.

机构信息

School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang, 639798, Singapore.

出版信息

Nanoscale Res Lett. 2009 Nov 1;5(1):247-51. doi: 10.1007/s11671-009-9473-9.

DOI:10.1007/s11671-009-9473-9

PMID:20652128

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2893907/

Abstract

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.

摘要

采用 Ar+ 离子溅射技术在室温下制备了掺铁氧化锌纳米针（NDs）。所生长的样品表现出铁磁性和激光特性。在 10 kOe 的磁场下，通过改变铁浓度，测量了从 0.307 到 0.659 emu cm-3 的饱和磁化强度。在室温下，Zn1 - xFexO NDs 观察到强紫外随机激光发射。X 射线光电子能谱结果表明，掺杂的 Fe 原子占据 Zn 位并导致氧空位减少。