Structural and electrical properties of 0.7BiFeO 3 –0.3CaTiO 3 solid solution thin films deposited from solutions

J. W. Kim, C. M. Raghavan, S. S. Kim*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

BiFeO 3 (BFO) and 0.7BiFeO 3 –0.3CaTiO 3 (7B3C) thin films were prepared on Pt(111)/Ti/SiO 2 /Si(100) substrates by using a chemical solution deposition method. The microstructures and the surface morphologies of the thin films were investigated by obtaining the X-ray diffraction patterns, Raman scattering spectra, and by performing scanning electron microscopic analyses. The experimental results showed the 7B3C solid solution thin film to exhibit superior ferroelectric properties. A low leakage current density and dramatically enhanced ferroelectric properties were observed for the 7B3C solid solution thin film. In addition, this solid solution thin film exhibited a soft ferroelectric nature with a large remnant polarization of 35.3 C/cm 2 at an applied electric field of 565 kV/cm and a low coercive electric field of 172 kV/cm, while the BFO thin film exhibited an irregular ferroelectric hysteresis loop with a large current density in comparison. Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)693-698
Number of pages6
JournalJournal of Sol-Gel Science and Technology
Volume76
Issue number3
Early online date1 Aug 2015
DOIs
Publication statusPublished - 1 Dec 2015

Keywords

  • 0.7BiFeO –0.3CaTiO thin film
  • Chemical solution deposition
  • Electrical properties
  • Ferroelectric properties

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