NDLI: Low-Temperature Synthesis of Fe-Doped ZnO Nanotubes

Content Provider	Springer Nature Link
Author	Sapkota, Gopal Gryczynski, Karol Mcdougald, Roy Neogi, Arup Philipose, U.
Copyright Year	2012
Abstract	We report on the synthesis Zn$_{1−x }$Fe$_{ x }$O nanotubes with average tube diameter of 60 nm to 100 nm and wall thickness of about 20 nm. The nanotubes were synthesized by a low-temperature electrochemical process, and their morphology was found to be sensitive to the electrolyte concentration and growth time. The maximum Fe doping achieved by this process was estimated to be approximately 4 wt.%. High-resolution transmission electron microscopy and x-ray diffraction showed good crystalline quality of the doped and undoped nanotubes with preferential growth along the wurtzite c-axis. The Fe-doped nanotubes exhibit wurtzite crystal structure with an increase in the c-axis lattice constant when compared with the undoped nanotubes, indicative of the fact that Fe ions substitute for Zn as 2+ ions in the ZnO crystal lattice. Further evidence of Fe as a substitutional dopant is provided by Raman and photoluminescence spectroscopy. A comparison of the effective magnetic moment in the undoped and doped nanotubes reveals the presence of four unpaired electrons in the Fe-doped sample and zero unpaired electrons for the undoped sample.
Starting Page	2155
Ending Page	2161
Page Count	7
File Format	PDF
ISSN	03615235
Journal	Journal of Electronic Materials
Volume Number	41
Issue Number	8
e-ISSN	1543186X
Language	English
Publisher	Springer US
Publisher Date	2012-05-31
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanowires nanotubes wide band gap Fe-doped ZnO Electronics and Microelectronics, Instrumentation Optical and Electronic Materials Characterization and Evaluation of Materials Solid State Physics
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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