Optical and dielectric properties of SrMoO4powders prepared by the combustion synthesis method

S. Vidya, Annamma John, Sam Solomon, J.K. Thomas
2012 Advances in materials Research  
In this paper, we report on the obtention of nanocrystalline SrMoO 4 synthesized through modified combustion process. These powders were characterized by X-ray diffraction, Fourier Transform Raman and Infrared Spectroscopy. These studies reveal that the scheelite-type SrMoO 4 crystallizes in tetragonal structure with I41/a (N#88) space group. Transmission electron microscopy image shows that the nanocrystalline SrMoO 4 powders have average size of 18 nm. The optical band gap determined from the
more » ... determined from the UV-V is absorption spectra for the as prepared sample is 3.7 eV. These powders showed a strong green photoluminescence emission. The samples are sintered at a relatively low temperature of 850 o C. The morphology of the sintered pellet is studied with scanning electron microscopy. The dielectric constant and loss factor values obtained at 5 MHz for a well sintered SrMoO 4 pellet has been found to be 9.50 and 7.5 × 10 -3 respectively. Thus nano SrMoO 4 is a potential candidate for low temperature co-fired ceramics and luminescent applications.
doi:10.12989/amr.2012.1.3.191 fatcat:2fd3e7awtrf6vi3zpxefrk2ugi