Open AccessStructure and dielectric behaviour of Sr-modified Bi4Si3O12 thin films prepared via sol gel method
Author(s) -
Abbas SadeghzadehAttar,
Saeid Hajijafari-Bidgoli,
Mohammad Bafandeh Reza
Publication year - 2018
Publication title -
processing and application of ceramics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.326
H-Index - 15
eISSN - 2406-1034
pISSN - 1820-6131
DOI - 10.2298/pac1801036s
Subject(s) - materials science , dielectric , annealing (glass) , sol gel , dielectric loss , bismuth , analytical chemistry (journal) , thin film , morphology (biology) , particle size , chemical engineering , mineralogy , composite material , nanotechnology , chromatography , chemistry , metallurgy , optoelectronics , biology , engineering , genetics
Bismuth silicate (Bi4Si3O12, BSO) nanostructured films containing 0,1,2, and 3mol% Sr were prepared via sol-gel method and annealed at different temperatures up to 700?C. The effects of Sr content on the structure and morphology of prepared films were investigated. SEM images showed that surfaces of the prepared films were dense, smooth and homogeneous. The average particle size was changed from 30 to 35 nm as the annealing temperature was increased from 500 to 700?C. Variation of the dielectric constant and dielectric loss as a function of frequency and annealing temperature for the synthesized thin films with different content of Sr were also studied. The dielectric constant and dielectric loss decrease with Sr addition, and reach the minimum for the sample containing 2mol% Sr. These changes could be attributed to the crystal structure and formation of secondary phases.