Effect of Tin Addition on the Phase Transitions of Ferroelectric Barium Titanate from Tetragonal to Cubic Crystal System

Authors

  • Badr Al-Araj Tishreen University
  • Nasser Saad Al-Din Al-Baath University
  • Mohammad Mohseen Mohammad Tishreen University

Abstract

Solid solutions of tin-doped barium titanate (BaTi1-xSnxO3) were synthesized by solid-state reaction method at calcining temperature 1200˚C and time 2h for ratios x=0, 0.05, 0.07, 0.1, 0.12, 0.15, 0.17. The structural properties of the prepared samples were studied using X-ray diffraction technique (XRD). The diffraction patterns confirmed the formation of the pure and tin-doped barium titanate phase. The experimental results also showed that compounds with ratios x = 0, 0.05, 0.07 possessed the tetragonal crystal system, and it was found that both the tetragonal and cubic crystal systems were formed in the ratio x=0.1, while the samples with proportions x = 0.12, 0.15, 0.17 had the cubic crystal system. The intensity of dislocations was increased by tin doping due to the replacement of tin ions Sn4+ (ri=0.83Å) by titanium ions Ti4+ (ri=0.745Å) in the crystal lattice. The density of dislocations was highest in the sample with the ratio x = 0.1 because it contains two crystal systems tetragonal and cubic. The higher percentage of doping with tin causes an increase in the unit cell volume, and the crystallization rate in the samples decreased from 97% to 90%.

 

Author Biographies

Badr Al-Araj, Tishreen University

Professor, Department of Physics –Faculty of science

Nasser Saad Al-Din, Al-Baath University

Professor, Department of Physics–Faculty of science

Mohammad Mohseen Mohammad, Tishreen University

PhD student, Department of Physics–Faculty of science

Published

2022-03-31

How to Cite

1.
الأعرج ب, سعد الدين ن, محمد مم. Effect of Tin Addition on the Phase Transitions of Ferroelectric Barium Titanate from Tetragonal to Cubic Crystal System. TUJ-BA [Internet]. 2022Mar.31 [cited 2024Mar.29];44(1):53-66. Available from: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/12084