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Defect induced paramagnetism in lightly doped ZnS:Fe nanoparticles
Defect induced paramagnetism in lightly doped ZnS:Fe nanoparticles
- Source :
- Physica E: Low-dimensional Systems and Nanostructures. 73:63-68
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Nanoparticles of ZnS:Fe (0, 1, 3, and 5 at%) were synthesized by a refluxing route at 80 °C. All the samples exhibited cubic structure as revealed by X-ray powder diffraction studies. Blue emission of undoped samples was totally quenched by Fe doping. Magnetic measurements showed that the undoped ZnS was diamagnetic whereas all the doped samples were paramagnetic at room temperature. EPR signal characteristic of Fe3+ was observed in all the doped samples at room temperature. The paramagnetism of the present samples is attributed to the presence of uncoupled Fe3+ ions mediated by cation vacancies.
- Subjects :
- Photoluminescence
Materials science
Condensed matter physics
Doping
Analytical chemistry
Nanoparticle
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
law.invention
Ion
Paramagnetism
law
Diamagnetism
Electron paramagnetic resonance
Powder diffraction
Subjects
Details
- ISSN :
- 13869477
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- Physica E: Low-dimensional Systems and Nanostructures
- Accession number :
- edsair.doi...........fbcfa3017005d93a7ef0f6364fff10b1
- Full Text :
- https://doi.org/10.1016/j.physe.2015.05.017