Structural characterization of mechanically milled ZnO: influence of zirconia milling media
Nema prikaza
Autori
Vojisavljević, KatarinaŠćepanović, Maja
Srećković, Tatjana
Grujic-Brojcin, M.
Branković, Zorica
Branković, Goran
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Zinc oxide nanoparticles were obtained by milling in a planetary ball mill with a zirconia milling assembly for up to 5 h in air. The samples were characterized by scanning electron microscopy, x-ray diffraction (XRD) and Raman spectroscopy methods. The deviation of the lattice parameters from single crystal values was related to defect creation and increase of strain inside the hexagonal lattice of milled ZnO nanoparticles. The observed redshift and peak broadening of the major first-order Raman modes were ascribed to the formation of intrinsic defects by mechanical milling combined with the effects of phonon confinement in nanosized powders. To investigate the type of intrinsic defects and impurities introduced during milling, it was necessary to analyze both milled and thermally treated ZnO. After thermal treatment, the intensity of the Raman spectra increased and the peak positions reverted to values similar to those in unmilled ZnO powder, pointing to defect annihilation. XRD patt...erns of sintered samples confirmed the existence of zirconia impurities and the Rietveld analysis revealed a small amount of zirconium introduced in the ZnO crystal lattice on the Zn sites or interstitial sites. The large influence of those impurities on the micro-Raman spectra of thermally treated samples was observed in this study.
Ključne reči:
ZnO nanopowder / mechanical milling / intrinsic defects / Raman spectroscopy / phonon confinementIzvor:
Journal of Physics-Condensed Matter, 2008, 20, 47Izdavač:
- IOP Publishing Ltd, Bristol
DOI: 10.1088/0953-8984/20/47/475202
ISSN: 0953-8984
WoS: 000260758700025
Scopus: 2-s2.0-58149299520
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Vojisavljević, Katarina AU - Šćepanović, Maja AU - Srećković, Tatjana AU - Grujic-Brojcin, M. AU - Branković, Zorica AU - Branković, Goran PY - 2008 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/268 AB - Zinc oxide nanoparticles were obtained by milling in a planetary ball mill with a zirconia milling assembly for up to 5 h in air. The samples were characterized by scanning electron microscopy, x-ray diffraction (XRD) and Raman spectroscopy methods. The deviation of the lattice parameters from single crystal values was related to defect creation and increase of strain inside the hexagonal lattice of milled ZnO nanoparticles. The observed redshift and peak broadening of the major first-order Raman modes were ascribed to the formation of intrinsic defects by mechanical milling combined with the effects of phonon confinement in nanosized powders. To investigate the type of intrinsic defects and impurities introduced during milling, it was necessary to analyze both milled and thermally treated ZnO. After thermal treatment, the intensity of the Raman spectra increased and the peak positions reverted to values similar to those in unmilled ZnO powder, pointing to defect annihilation. XRD patterns of sintered samples confirmed the existence of zirconia impurities and the Rietveld analysis revealed a small amount of zirconium introduced in the ZnO crystal lattice on the Zn sites or interstitial sites. The large influence of those impurities on the micro-Raman spectra of thermally treated samples was observed in this study. PB - IOP Publishing Ltd, Bristol T2 - Journal of Physics-Condensed Matter T1 - Structural characterization of mechanically milled ZnO: influence of zirconia milling media IS - 47 VL - 20 DO - 10.1088/0953-8984/20/47/475202 ER -
@article{ author = "Vojisavljević, Katarina and Šćepanović, Maja and Srećković, Tatjana and Grujic-Brojcin, M. and Branković, Zorica and Branković, Goran", year = "2008", abstract = "Zinc oxide nanoparticles were obtained by milling in a planetary ball mill with a zirconia milling assembly for up to 5 h in air. The samples were characterized by scanning electron microscopy, x-ray diffraction (XRD) and Raman spectroscopy methods. The deviation of the lattice parameters from single crystal values was related to defect creation and increase of strain inside the hexagonal lattice of milled ZnO nanoparticles. The observed redshift and peak broadening of the major first-order Raman modes were ascribed to the formation of intrinsic defects by mechanical milling combined with the effects of phonon confinement in nanosized powders. To investigate the type of intrinsic defects and impurities introduced during milling, it was necessary to analyze both milled and thermally treated ZnO. After thermal treatment, the intensity of the Raman spectra increased and the peak positions reverted to values similar to those in unmilled ZnO powder, pointing to defect annihilation. XRD patterns of sintered samples confirmed the existence of zirconia impurities and the Rietveld analysis revealed a small amount of zirconium introduced in the ZnO crystal lattice on the Zn sites or interstitial sites. The large influence of those impurities on the micro-Raman spectra of thermally treated samples was observed in this study.", publisher = "IOP Publishing Ltd, Bristol", journal = "Journal of Physics-Condensed Matter", title = "Structural characterization of mechanically milled ZnO: influence of zirconia milling media", number = "47", volume = "20", doi = "10.1088/0953-8984/20/47/475202" }
Vojisavljević, K., Šćepanović, M., Srećković, T., Grujic-Brojcin, M., Branković, Z.,& Branković, G.. (2008). Structural characterization of mechanically milled ZnO: influence of zirconia milling media. in Journal of Physics-Condensed Matter IOP Publishing Ltd, Bristol., 20(47). https://doi.org/10.1088/0953-8984/20/47/475202
Vojisavljević K, Šćepanović M, Srećković T, Grujic-Brojcin M, Branković Z, Branković G. Structural characterization of mechanically milled ZnO: influence of zirconia milling media. in Journal of Physics-Condensed Matter. 2008;20(47). doi:10.1088/0953-8984/20/47/475202 .
Vojisavljević, Katarina, Šćepanović, Maja, Srećković, Tatjana, Grujic-Brojcin, M., Branković, Zorica, Branković, Goran, "Structural characterization of mechanically milled ZnO: influence of zirconia milling media" in Journal of Physics-Condensed Matter, 20, no. 47 (2008), https://doi.org/10.1088/0953-8984/20/47/475202 . .