Abstract
This study deals with the changes in the electrical and optical properties of Sm2Ti2O7 due to the substitution of 25 wt% of Zr with Ti. Nanocrystalline Sm2Ti2O7 and Sm2Ti1.5Zr0.5O7, with cubic pyrochlore structure, are prepared through the modified combustion technique. X-ray diffraction (XRD) is used to find the structure and confirmed using vibrational spectroscopic tools. The particle size obtained for Sm2Ti2O7 using the transmission electron microscopic technique (TEM) is 12.74 nm. The band gap energy values of Sm2Ti2O7 are 3.33 eV and for Sm2Ti1.5Zr0.5O7 it is 3.47 eV. The photoluminescence (PL) spectroscopic studies give emission around 569 nm. The average grain size obtained using scanning electron microscopy (SEM) is 0.13 μm and 0.27 μm for Sm2Ti2O7 and Sm2Ti1.5Zr0.5O7, respectively. The conductivity is increased with temperature and high conductivity of 2.27 × 10−2 S/m is obtained for Sm2Ti2O7. These materials are found suitable for optical and solid oxide fuel cell applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
