Photoluminescence in Fe3+ ion doped barium titanate nanoparticles
Abstract
Fe3+ ion doped barium titanate (BT) nanopowders were synthesized by the sol gel route. The average size of tetragonal bariun titanate (t-BT) powders lies in the range 16–40 nm. The specimens show ultraviolet (UV) emission (peak at 376 nm) along with emission in violet, blue, green and yellow color. The blue band (peak at 452 nm) is seen to grow significantly with annealing temperature. This band arises due to Ti3+ defects which are stabilized by Fe3+ ions in BT specimens. The samples show two distinct Electron Paramagnetic Resonance (EPR) bands of g-value around 4.11 and 1.98, which originated from Fe3+ ions and Ti3+ defects respectively. A correlation between the photoluminescence (PL) and EPR band intensity, grown from same species, was found.
Supporting agencies: The work was supported by the grant from the Nano Science and Technology Initiative of the Department of Science and Technology, and University Grant Commission, New Delhi.
About the Authors
P. Barik
Visva-Bharati University
India
India
Department of Physics, Santiniketan-731235, W.B.
T. K. Kundu
Visva-Bharati University
India
India
Department of Physics, Santiniketan-731235, W.B.
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Review
For citations:
Barik P., Kundu T.K. Photoluminescence in Fe3+ ion doped barium titanate nanoparticles. Nanosystems: Physics, Chemistry, Mathematics. 2013;4(2):269-275.
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