Composition dependent room temperature ferromagnetism and PL intensity of cobalt doped ZnS nanoparticles

•PVP capped ZnS:Co nanoparticles were synthesized at 80°C through chemical route.•Structural, band gap, PL and magnetization studies were carried out.•Doped samples exhibited concentration dependent room temperature ferromagnetism.•Appreciable enhancement in PL intensity was noticed in all the doped...

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Veröffentlicht in:	Journal of alloys and compounds 2013-11, Vol.577, p.79-85
Hauptverfasser:	Poornaprakash, B., Amaranatha Reddy, D., Murali, G., Madhusudhana Rao, N., Vijayalakshmi, R.P., Reddy, B.K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Cobalt Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Domain effects, magnetization curves, and hysteresis Doping Exact sciences and technology Ferromagnetism Magnetic properties and materials Magnetization Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Materials science Methods of nanofabrication Nanoparticles Nanopowders Nanoscale materials and structures: fabrication and characterization Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Photoluminescence Physics Room temperature ferromagnetism Spectra Zinc sulfides ZnS:Co
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Zusammenfassung:	•PVP capped ZnS:Co nanoparticles were synthesized at 80°C through chemical route.•Structural, band gap, PL and magnetization studies were carried out.•Doped samples exhibited concentration dependent room temperature ferromagnetism.•Appreciable enhancement in PL intensity was noticed in all the doped samples.•ZnS:Co nanoparticles may find applications in luminescent and spintronic devices. ZnS:Co (0, 1, 2, 3 and 5 at.%) nanoparticles were synthesized by refluxing technique at 80°C, with PVP as stabilizer. The effect of cobalt doping on the structural, optical and magnetic properties is investigated. EDAX spectra confirmed the presence of Zn, Co and S in the samples. X-ray diffraction patterns showed a single phase that of zincblende and Transmission Electron Microscopy (TEM) indicated that the particles were a few nm (
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2013.04.106