Materials & Design
Multifunctional properties and applications of yttrium ferrite nanoparticles prepared by citrate precursor route
Yttrium Ferrite nanoparticles were prepared by citrate precursor method at reasonably low temperature.
Morphological and elemental studies reveal the formation of monophasic orthorhombic YFeO 3 nanoparticles
with fairly uniform distribution of nearly spherical particles, high specific surface area of ~338 m 2
/g and visible band gap of 2.5 eV. The electrical properties (i.e. dielectric and conductivity) were estimated from ac
spectroscopic data as a function of temperature. The wasp-waisted shaped hysteresis loop displayed low H c of
280 Oe, M s of 2.0 emug− 1 and M r of 0.45 emug− 1 indicating canted antiferromagnetism with weak
ferromagnetic behaviour. In addition to ferromagnetism, a room temperature ferroelectric loop confirmed the
multiferroic behaviour of the materials. The humidity sensing properties were investigated from 8 to 80% of RH
(Relative Humidity) that showed a linear response with a sensitivity of 16 nF/RH% at room temperature. Dye
sensitized solar cell (DSSC) was constructed in combination with TiO 2 powder to determine the photo-
conversion efficiency, current density and open circuit voltage. Photocatalytic generation of hydrogen by using
YFeO 3 nanoparticles has also been studied under the visible light irradiations which showed a significant H2
evolution reaction rate up to 131.6 μmol h− 1 g− 1 .
Brick shaped nanoparticles of nickel tungstate (NiWO4) were synthesized magnificently using the molten
salts process at 500 1C. Powder X-ray diffraction (PXRD) and electron microscopy…
Yttrium Ferrite nanoparticles were prepared by citrate precursor method at reasonably low temperature.
Morphological and elemental studies reveal the formation of monophasic orthorhombic…
Herein, delafossite CuCrO2 nanoparticles were synthesized through a polymeric citrate precursor method,
followed by heating at 900 C in air. The BET surface area of the CuCrO2 nanoparticles…