Effect of metallic Ag growth on the electrical resistance of 3D flower-like Ag4V2O7 crystals

Abstract: In this communication, we report for the first time the nucleation and growth of metallic Ag nanoparticles on the surface of 3D flower-like Ag4V2O7 crystals, induced by accelerated electron beam irradiation. The growth of metallic Ag on the surfaces of Ag4V2O7 crystals were studied by transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDXS). According to TEM images and EDXS analyses, exposure to the electron beam induces a reduction process and the growth of metallic Ag nanoparticles on the surface of Ag4V2O7 crystals. Moreover, the inductively coupled plasma optical emission spectrometry measurements indicated an excess of Ag and V vacancies at Ag4V2O7 lattice. Finally, it was observed that the electrical resistance varies considerably with the exposure time to electron beam irradiation.

Author(s): de Oliveira, RC; Zanetti, SM; Assis, M; Penha, M; Mondego, M; Cilense, M; Longo, E; Cavalcante, LS

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

DOI: 10.1111/jace.14803