Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 29    No. 4    April 2019

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Effect of phase transition on room temperature ferromagnetism in cerium doped ZnS nanorods

Nanomaterials Research Laboratory, Department of Physics, Government Arts College, Karur-639 005, India

Abstract:The effects of Ce doping on the structure, optical, oxidation, thermal and magnetic properties of ZnS:Ce nanorods synthesized by a chemical co-precipitation method were reported. The crystalline phase transformation from cubic to hexagonal structure was observed upon doping ZnS with Ce. Magnetic measurements showed the existence of room temperature ferromagnetism in Ce-doped ZnS nanorods. X-ray photoelectron spectroscopic (XPS) measurements provided evidence for Zn—S bonds and oxidation state of Ce in the near-surface region. Raman spectrum provided evidence for the presence of defects as well as hexagonal structure of 5 wt.% Ce doped ZnS nanorods. Ce substitution induced shape evolution was studied by using TEM. DRS spectra further validated the incorporation of Ce3+ ions. The present study reveals that Ce doped ZnS nanorods may find applications in spintronic devices.


Key words: Ce dopant; ZnS nanorods; phase transition; ferromagnetism; sulphur vacancy; thermal stability

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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