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2009 | 116 | 5 | 868-870
Article title

Physical Properties of ZnCoO Tetrapods and Nanofibers

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EN
Abstracts
EN
In this paper the physical properties of two types of Co-doped ZnO nanostructures: tetrapods and nanofibers grown by a rapid thermal evaporation process and prepared by the electrospinning technique, respectively, were investigated and analyzed. Surface morphology of the samples was examined using scanning electron microscopy. X-ray diffraction measurements showed hexagonal wurtzite crystal structure of both types of investigated nanostructures. Both X-ray diffraction and Raman scattering data confirmed high phase purity of the samples. The magnetic properties studied with the use of the SQUID magnetometer confirmed a presence of ferromagnetic order in analyzed nanostructures. The observed photoluminescence spectra exhibited two groups of lines. The first one, in the ultraviolet spectral range, is due to the optical transitions close to ZnO band gap, the second one in the red region is most probably related to the Co^{2+} d-d internal transitions. The influence of native defects on the optical properties is also shown and discussed. All results reported here lead us to the conclusion that in the mixed crystal nanostructures obtained, a fraction of the Zn^{2+} ions is substituted by Co^{2+} ions.
Keywords
Year
Volume
116
Issue
5
Pages
868-870
Physical description
Dates
published
2009-11
References
  • 1. Y. Xia, P. Yang, Y. Sun, Y. Wu, B. Mayers, B. Gates, Y. Yin, F. Kim, Adv. Mater. 15, 353 (2003)
  • 2. T. Dietl, H. Ohno, F. Matsukura, J. Cibert, D. Ferrand, Science 287, 1019 (2000)
  • 3. G. Yi, C. Wang, W.I. Park, Semicond. Sci. Technol. 20, S22 (2005)
  • 4. S. Bhushan, R.P. Asare, Pramana 15, 181 (1980)
  • 5. A.M. Fischer, S. Srinivasan, R. Garcia, F.A. Ponce, S.E. Guaño, B.C. Di Lello, F.J. Moura, I.G. Solórzano, Appl. Phys. Lett. 91, 121905 (2007)
  • 6. S. Mahmud, M.J. Abdullah, J. Chong, A.K. Mohamad, M.Z. Zakaria, J. Cryst. Growth 287, 118 (2006)
  • 7. H. Wu, D. Lin, R. Zhang, W. Pan, J. Am. Ceram. Soc. 2, 656 (2008)
  • 8. T.T. Loan, N.N. Long, L.H. Ha, Appl. Phys. 42, 06542 (2009)
  • 9. K. Vanheusden, W.L. Warren, C.H. Seager, D.R. Tallant, J.A. Voigt, B.E. Gnade, J. Appl. Phys. 79, 7983 (1996)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv116n530kz
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