Magnetization and structural studies of Mn doped ZnO nanoparticles: Prepared by reverse micelle method

Jayakumar, O. D., Gopalakrishnan, I. K., Kadam, R. M., Vinu, A., Asthana, A. and Tyagi, A. K. (2007) Magnetization and structural studies of Mn doped ZnO nanoparticles: Prepared by reverse micelle method. Journal of Crystal Growth, 300 2: 358-363. doi:10.1016/j.jcrysgro.2006.12.030


Author Jayakumar, O. D.
Gopalakrishnan, I. K.
Kadam, R. M.
Vinu, A.
Asthana, A.
Tyagi, A. K.
Title Magnetization and structural studies of Mn doped ZnO nanoparticles: Prepared by reverse micelle method
Journal name Journal of Crystal Growth   Check publisher's open access policy
ISSN 0022-0248
1873-5002
Publication date 2007-03
Sub-type Article (original research)
DOI 10.1016/j.jcrysgro.2006.12.030
Volume 300
Issue 2
Start page 358
End page 363
Total pages 6
Place of publication Amsterdam, The Netherlands
Publisher Elseiver
Language eng
Formatted abstract
Single phase Mn (2.5 at%) doped ZnO nanocrystalline samples were synthesized by reverse micelle method as characterized by Rietveld refinement analysis of X-ray diffraction data, high resolution transmission electron microscopy and selected area electron diffraction analyses. The X-ray photoelectron spectroscopy and electron paramagnetic resonance (EPR) studies indicated that manganese exist as Mn 2+ in ZnO lattice. DC magnetization measurements as a function of field and temperature, of 2.5 at% Mn doped ZnO nanoparticles annealed at 675 K, showed room temperature ferromagnetism (RTF). This observation is further confirmed by the EPR spectrum of the sample, which shows a distinct ferromagnetic resonance signal at room temperature. These results indicate that the observed RTF in Mn-doped ZnO may be attributed to the substitutional incorporation of Mn at Zn sites
Keyword DC magnetization
Transmission electron microscopy (TEM)
Mn doped ZnO nanoparticles
Dilute magnetic semiconductor
Room temperature ferromagnetism
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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