Influence of Sr doping on structural, optical and magnetic properties of TiO2 nanoparticles

Strontium (Sr) doped anatase TiO2 nanoparticles were synthesized by the method of hydrolysis and characterized for their structural, optical and magnetic properties. The crystalline nature and tetragonal anatase phase of undoped and Sr doped TiO2 nanoparticles were examined by XRD. The blue shifted...

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Bibliographic Details
Published in:Materials letters 2015-12, Vol.161, p.520-522
Main Authors: Rajamanickam, N., Kanmani, S.S., Rajashabala, S., Ramachandran, K.
Format: Article
Language:English
Subjects:
Anatase
Doping
Emission
Ferromagnetism
Magnetic materials
Magnetic properties
Nanoparticles
Nanosize particles
Optical properties
Strontium
Titanium dioxide
X-ray techniques
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Summary:Strontium (Sr) doped anatase TiO2 nanoparticles were synthesized by the method of hydrolysis and characterized for their structural, optical and magnetic properties. The crystalline nature and tetragonal anatase phase of undoped and Sr doped TiO2 nanoparticles were examined by XRD. The blue shifted band gap of the nanoparticles was studied by UV–vis analysis. Room-temperature (RT) photoluminescence (PL) spectra of Sr doped TiO2 nanoparticles exhibited a strong UV emission at 364nm and 381nm, and a weak emission at 406nm and 431nm. The PL spectra also showed an increase in concentration of the defects, due to doping. The room temperature ferromagnetism (RTFM) was observed from VSM measurement, for undoped and Sr doped TiO2 nanoparticles and the influence of Sr is discussed. •Undoped and Sr-doped TiO2 nanoparticles are synthesized by hydrolysis method.•Tetragonal anatase phase confirmed by XRD.•Blue shifted band gap observed due to the Sr doping, compared to bulk.•Undoped and Sr-doped TiO2 nanoparticles exhibit room temperature ferromagnetism.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2015.09.023