Abstract
This work investigates cobalt doped ZnO nanoparticles prepared by using wet chemical methods. The nanoparticles have a typical size of 3–8 nm. The electronic structure as well as the optical and magnetic properties of Co2+ have been characterized. X-ray diffraction spectra of the powder show wurtzite ZnO with no secondary Co phases. In the energy range below the bandgap, the optical absorption spectra show the internal d–d transitions related to Co2+ incorporated on the Zn lattice site in ZnO. Low temperature photoluminescence measurements confirm these results. Based on the analysis of the g-valuesfor bulk ZnO:Co., electron paramagnetic resonance measurements coincide with the simulation of Co-doped ZnO powder. Thus far, no evidence for ferromagnetism has been obtained.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K. Sato, H. Katayama-Yoshida, Japan. J. Appl. Phys. 39, L555 (2000)
T. Dietl, H. Ohno, F. Matsukura, J. Cibert, D. Ferrand, Science 287, 1019 (2000)
K. Ueda, H. Tabata, T. Kawai, Appl. Phys. Lett. 79, 988 (2001)
H.-J. Lee, S.-Y. Jeong, C.R. Cho, C.H. Park, Appl. Phys. Lett. 82, 4020 (2002)
R. Sharma, A. Gupta, K.V. Rao, F.J. Owens, R. Sharma, R. Ahuja, J.M.O. Guillen, B. Johannsson, G.A. Gehring, Nature Mater. 2, 673 (2003)
D.A. Schwartz, N.S. Norberg, Q.P. Nguyen, J.M. Parker, D.R. Gamelin, J. Am. Chem. Soc. 125, 13205 (2003)
K.R. Kittilstved, N.S. Norberg, D.R. Gamelin, Phys. Rev. Lett. 94, 147209 (2005)
N.S. Norberg, K.R. Kittilstved, J.E. Amonette, R.K. Kukkadapu, D.A. Schwartz, D.R. Gamelin, J. Am. Chem. Soc. 126, 9387 (2004)
P.V. Radovanocic, N.S. Norberg, K.E. McNally, D.R. Gamelin, J. Am. Chem. Soc. 124, 15192 (2002)
E.A. Meulenkamp, J. Phys. Chem. B 102, 5566 (1998)
A. Taylor, X-ray Metallography (Wiley, New York, 1961)
I.M. Lifshitz, V.V. Slyozov, J. Phys. Chem. Solids 19, 35 (1961)
C. Wagner, Z. Elektrochem. 65, 581 (1961)
H.A. Weakliem, J. Chem. Phys. 36, 2117 (1962)
P. Koidl, Phys. Rev. B 15, 2493 (1977)
H.J. Schulz, M. Thiede, Phys. Rev. B 35, 18 (1987)
N. Jedrecy, H.J. von Bardeleben, Y. Zheng, J.-L. Cantin, Phys. Rev. B 69, 041308 (2004)
A. Abragam, B. Bleaney, Electron Paramagnetic Resonance of Transition Ions (Clarendon, Oxford, 1970)
H. Zhou, D.M. Hofmann, A. Hofstaetter, B.K. Meyer, J. Appl. Phys. 94, 1965 (2003)
M.H.F. Sluiter, Y. Kawazoe, P. Sharma, A. Inoue, A.R. Raju, C. Rout, U.V. Waghmare, Phys. Rev. Lett. 94, 187204 (2005)
Author information
Authors and Affiliations
Corresponding author
Additional information
PACS
61.46.Df; 76.30.Fc; 78.67.Bf
Rights and permissions
About this article
Cite this article
Volbers, N., Zhou, H., Knies, C. et al. Synthesis and characterization of ZnO:Co2+ nanoparticles. Appl. Phys. A 88, 153–155 (2007). https://doi.org/10.1007/s00339-007-3960-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00339-007-3960-6