Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : BST

Studying The Dielectric and Structural Properties of Baxsr1-Xtio3 (BST) Ferroelectric System Prepared by Using Oxalic Acid Route

Sabah M. Ali Ridha; Rawa A. Helal

Engineering and Technology Journal, 2010, Volume 28, Issue 10, Pages 2015-2026

BaxSr1-xTiO3 (BST) ferroelectric nano, poly crystalline systems were
processed with three concentrations (x = 0.5, 0.7 and 0.9) using a technique known
as oxalic acid route. The XRD spectra were analyzed, and used Scherer formula to
estimate the crystallite size of the products, which reached to 15.4 nm at x = 0.5. It
is found that increasing of Sr+2 cations help to decrease the crystallite size of
BaxSr1-xTiO3 system and the tetragonality c/a increases when the crystallite size
increases. In physical tests we conclude that the oxalic acid method is a good
method to prepare a BST ferroelectric phase with high density (5.05, 5.5 and 5.45)
gm/cm3, and small porosity (16, 8, and11) % for (x = 0.5, 0.7 and 0.9)