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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Manjari, V. Pushpa Krishna, Ch Rama Stella, R. Joyce Aswani, T. Babu, B. Rao, G. Thirumala Ravikumar, R. V. S. S. N. |
| Description | Country affiliation: India Author Affiliation: Aswani T ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India.); Babu B ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India.); Manjari VP ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India.); Stella RJ ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India.); Rao GT ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India.); Krishna ChR ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India.); Ravikumar RV ( Department of Physics, University College of Sciences, Acharya Nagarjuna University, Nagarjuna Nagar-522510, AP, India. Electronic address: rvssn@yahoo.co.in.) |
| Abstract | Trivalent transition metal ions (Cr(3+), Fe(3+)) doped CdO nanopowders via sonication in the presence of Sodium lauryl sulfate as stabilizing agent were synthesized and characterized. Powder XRD studies indicate that the obtained CdO has a cubic phase and concluded that the trivalent ions doping induced the lattice constants to change some extent. Optical absorption spectra exhibited the characteristic bands of Cr(3+) and Fe(3+) ions in octahedral site symmetry. Crystal field (Dq) and inter-electronic repulsion (B and C) parameters are evaluated for Cr(3+) doped CdO nanopowders as Dq=1540, B=619 and C=3327 cm(-1) and for Fe(3+) doped CdO nanopowders Dq=920, B=690, C=2750 cm(-1). EPR spectra of the Cr(3+) and Fe(3+) doped CdO nanopowders exhibited resonances at g=1.973 and g=2 respectively which indicate distorted octahedral site for both ions with the host. Photoluminescence spectra shows the emission bands in violet and bluish green regions for Cr(3+) doped CdO, ultraviolet and blue emissions for Fe(3+) doped CdO nanopowders. The CIE chromaticity coordinates were also evaluated from the emission spectrum. FT-IR spectra indicate the presence of various functional groups of host lattice. |
| ISSN | 13861425 |
| Volume Number | 121 |
| e-ISSN | 18733557 |
| Journal | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cadmium Compounds Chemistry Chromium Iron Nanoparticles Oxides Absorption Electron Spin Resonance Spectroscopy Ions Ultrastructure Optical Phenomena Powders Spectrometry, Fluorescence Spectrometry, X-ray Emission Spectroscopy, Fourier Transform Infrared Vibration X-ray Diffraction Journal Article Research Support, Non-u.s. Gov't Discipline Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation |
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