Ultrasonication effect based on the coordination number on the structure of Ba0.44Sr0.56Ti(1-x)InxO3 ceramics

Akbas H. Z.

Materials Chemistry and Physics, vol.202, pp.89-94, 2017 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 202
  • Publication Date: 2017
  • Doi Number: 10.1016/j.matchemphys.2017.09.007
  • Journal Name: Materials Chemistry and Physics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.89-94
  • Keywords: Ceramics, Coordination number, Microstructure, X-ray diffraction
  • Hatay Mustafa Kemal University Affiliated: Yes

Abstract

Lead-free Ba0.44Sr0.56Ti(1-x)InxO3 (x % = 0, 4, 8, 10) ceramics synthesized by the solid state reaction are modified by ultrasonication. The X-ray diffraction analysis confirmed that the Ba0.44Sr0.56TiO3 powder was obtained highly pure, which has a single phase with a monoclinic structure. Replacing In ions with Ti ions change the crystal structure because of the coordination numbers, in which different cations with different ionic radius are placed in the matrix. Cavitation effects on the powder are very different in the liquid. Both the grain size and its coordination number stay active during the deagglomeration process. The grains with the higher coordination number are harder to break. This effect obviously appeared in the XRD patterns as extra peaks and peak broadening because of the dislocation and the particle size distribution. Broadening the XRD peak width and shape confirmed that doping In changes the crystal lattice because of the crystallite smallness with different sized.