Physical and spectral investigations of Mn²⁺ ions doped poly vinyl alcohol capped ZnSe nanoparticles

Mn²⁺ doped ZnSe nanoparticles are prepared by using poly vinyl alcohol (PVA) as capping agent. Various physical parameters are calculated for the prepared sample and spectroscopic techniques such as XRD, optical, electron paramagnetic resonance (EPR) and FT-IR studies have been carried out. The part...

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Bibliographic Details
Published in:Journal of molecular structure 2011-12, Vol.1006 (1-3), p.344-347
Main Authors: Muntaz Begum, Sk, Nirmala, G, Ravindranadh, K, Aswani, T, Rao, M.C, Sambasiva Rao, P, Ravikumar, R.V.S.S.N
Format: Article
Language:English
Subjects:
absorption
electron paramagnetic resonance spectroscopy
ions
manganese
nanoparticles
particle size
polyvinyl alcohol
temperature
X-ray diffraction
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Summary:Mn²⁺ doped ZnSe nanoparticles are prepared by using poly vinyl alcohol (PVA) as capping agent. Various physical parameters are calculated for the prepared sample and spectroscopic techniques such as XRD, optical, electron paramagnetic resonance (EPR) and FT-IR studies have been carried out. The particle size is characterized by powder X-ray diffraction and it is about 21nm as calculated by Scherrer’s formula. The EPR spectrum at room temperature exhibits sextet hyperfine structure centered at g≈2·0, characteristic of Mn²⁺ ions in octahedral symmetry. EPR and optical absorption studies reveal that the site symmetry of Mn²⁺ is predominantly octahedral. Crystal field and inter-electronic parameters are evaluated. FT-IR spectrum exhibits bands, which are attributed to OH, CH, CC and CO groups of stretching and bending vibrations.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2011.09.030