CVD PREPARED Mn-DOPED ZnO NANOWIRES

Mn-doped ZnO nanowires prepared by chemical vapor deposition (CVD) were obtained in the temperature range of 450–500°C. X-ray diffraction patterns, SEM and TEM images indicate that crystals with a hexagonal structure grow along the c axis. At low Mn-doped concentrations, photoluminescence (PL) and R...

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Published inASEAN journal on science & technology for development Vol. 24; no. 1&2; pp. 125 - 130
Main Authors Phan, T.L., Vincent, R., Cherns, D., Nghia, N.X.
Format Journal Article
LanguageEnglish
Published Universiti Brunei Darussalam 15.11.2017
Subjects
Mn-doped ZnO
spintronics materials
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Summary:Mn-doped ZnO nanowires prepared by chemical vapor deposition (CVD) were obtained in the temperature range of 450–500°C. X-ray diffraction patterns, SEM and TEM images indicate that crystals with a hexagonal structure grow along the c axis. At low Mn-doped concentrations, photoluminescence (PL) and Raman scattering (RS) spectra are almost independent of the Mn doping. However, the increase in concentration of Mn above 1.6 at% weakens significantly the PL signal and the RS-lines intensity in the low wavenumber range of 300–480 cm-1, and concurrently increases the RS-lines intensity in the higher wavenumber range of 480-700 cm-1.. Magnetic measurements determined the Curie temperature of Mn-doped ZnO nanowire to be about 37 K.
ISSN:0217-5460
2224-9028
DOI:10.29037/ajstd.191