Abstract
Present manuscript deals with the structural changes associated with transformation of bulk Y2Sn2O7 into nanoparticles of Y2Sn2O7. Nanoparticles of Y2Sn2O7 both undoped and Eu3+ doped, were prepared at a relatively low temperature (700°C) and investigated for their structural and luminescence properties and compared them with that of bulk Y2Sn2O7 sample prepared by the solid-state method at 1300°C. Significant distortion in geometry and electron density distribution around Y3+/Eu3+ ions in nanoparticles are confirmed from the Rietveld refinement of the powder X-ray diffraction patterns and theoretical calculations based on the density functional theory (DFT). The SnO6 octahedron in Y2Sn2O7 is more expanded in nanoparticles compared to bulk. Iso-surface density distribution reveals that while bulk sample shows typical ionic feature in Y/EuO bonds, nanoparticle sample shows sharing of electron density along bond axis pertaining to covalent character. These inferences are further supported by the doped Eu3+ luminescence and calculated Ω2 and Ω4 parameters.
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.
