Tunable Paramagnetism in Mn co-doped N:CdS Composite Nanoparticles
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Published:2023-10-30
Issue:5
Volume:39
Page:1184-1193
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ISSN:2231-5039
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Container-title:Oriental Journal Of Chemistry
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language:en
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Short-container-title:Orient. J. Chem
Author:
Reddy M Surya Sekhar1ORCID
Affiliation:
1. 1Department of Physics, JNTUA, Ananthapuramu, A.P., India
Abstract
Manganese-co-doped N:CdS composite nanoparticles (CNps) have been prepared by using the co-precipitation method. 2-Mercaptoethonal is used as a surfactant to control the size of nanoparticles. X-ray diffraction (XRD) studies confirm the size of the particles in the nanorange. The Rietveld refinement with X'-pert high-score software studies show multiphase existence in as-prepared composite nanoparticles. The energy dispersive analyses of X-ray studies (EDAX) confirm the presence of doped Mn and nitrogen elements in CdS. The Fourier transform infrared spectroscopy (FTIR) studies confirm the presence of surfactant. The ultraviolet-visible spectroscopy studies (UV-VIS) show a clear blue shift in the band gap, which is an indication of the quantum confinement effect. The photoluminescence studies (PL) attribute the emission of a characteristically strong peak at λ = 632 nm, corresponding to the (4T1→6A1) transition, to the inclusion of Mn2+ in the core of the CdS lattice. The electron paramagnetic spectroscopy (EPR) studies show paramagnetic behavior. The hyperfine splitting constant (A) values around 7 mT from EPR confirms the inclusion of Mn2+ and N3- in the tetrahedral sites of the CdS core. The variation in optical and magnetic properties of as-prepared composite nanoparticles has the potential for optoelectric and magnetoluminescence devices.
Publisher
Oriental Scientific Publishing Company
Subject
Drug Discovery,Environmental Chemistry,Biochemistry,General Chemistry
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