Login (DCU Staff Only)
Login (DCU Staff Only)

DORAS | DCU Research Repository

Explore open access research and scholarly works from DCU

Advanced Search

Structural, optical and magnetic properties of Cr doped ZnO microrods prepared by spray pyrolysis

Yilmaz, S., Parlak, M., Özcan, Ş., Altunbas, M., Bacaksiz, E. and McGlynn, Enda orcid logoORCID: 0000-0002-3412-9035 (2011) Structural, optical and magnetic properties of Cr doped ZnO microrods prepared by spray pyrolysis. Applied Surface Science, 257 (22). pp. 9293-9298. ISSN 0169-4332

A series of Cr-doped ZnO micro-rod arrays were fabricated by a spray pyrolysis method. X-ray diffraction patterns of the samples showed that the undoped and Cr-doped ZnO microrods exhibit hexagonal crystal structure. Surface morphology analysis of the samples has revealed that pure ZnO sample has a hexagonal microrod morphology. From X-ray photoelectron spectroscopy studies, the Cr 2p3/2 binding energy is found to be 577.34 eV indicating that the electron binding energy of the Cr in ZnO is almost the same as the binding energy of Cr3+ states in Cr2O3. The optical band gap Eg decreases slightly from 3.26 to 3.15 eV with the increase of actual Cr content from x = 0.00 to 4.63 at % in ZnO. Photoluminescence studies at 10 K show that the incorporation of chromium leads to a relative increase of deep level band intensity. It was also observed that Cr doped samples clearly showed ferromagnetic behavior; however, 2.49 % Cr doped ZnO showed remnant magnetization higher than that of 1.07 % and 4.63 % Cr doped samples, while 4.63 % Cr doped ZnO samples had a coercive field higher than the other dopings.
Item Type:Article (Published)
Subjects:Engineering > Materials
Physical Sciences > Thin films
Physical Sciences > Nanotechnology
Physical Sciences > Semiconductors
DCU Faculties and Centres:Research Institutes and Centres > National Centre for Plasma Science and Technology (NCPST)
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Official URL:http://dx.doi.org/10.1016/j.apsusc.2011.05.017
Copyright Information:© 2011 Elsevier
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:19661
Deposited On:19 Nov 2013 16:42 by Enda Mcglynn . Last Modified 19 Mar 2019 15:34

Full text available as:

[thumbnail of Applied Surface Science, 257 (2011) 9293–9298]
PDF (Applied Surface Science, 257 (2011) 9293–9298) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader


Downloads per month over past year

Archive Staff Only: edit this record