Dielectric behavior, band gap, in situ X-ray diffraction, Raman and infrared study on (1 − x)BiVO4–x(Li0.5Bi0.5)MoO4 solid solution
- 8 February 2013
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in RSC Advances
- Vol. 3 (15), 5009-5014
- https://doi.org/10.1039/c3ra22604b
Abstract
The phase transition in the (1 − x)BiVO4–x(Li0.5Bi0.5)MoO4 solid solution was first confirmed by the in situ X-ray diffraction method. The merging of the (2 0 0) and (0 2 0) diffraction peaks in the X-ray diffraction data, and the overlapping of the δs(VO4) and δas(VO4) modes for Raman and Infrared spectra of x = 0.06 sample were observed at 110–115 °C. The splitting of infrared bands at around 325 cm−1 for x = 0.125 sample was revealed at −10 °C. The dielectric permittivity peaks as a function of temperature can be observed at high frequencies (>10 kHz), which is corresponding to the ferroelastic phase transition. In the monoclinic solid solution region, the band gaps were found to lie between 2.2–2.35 eV a range of interest as photo-catalytic materials.This publication has 29 references indexed in Scilit:
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