Ferroelectric properties of Ba2Bi4Ti 5O18 doped with Pb2+, Al3+, Ga 3+, In3+, Ta5+ aurivillius phases

A. Rosyidah*, D. Onggo, Khairurrijal, Ismunandar

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

In recent years, bismuth layer structured ferroelectrics (BLSFs) have been given much attention because some materials, such as Ba2Bi 4Ti5O18, are excellent candidate materials for nonvolatile ferroelectric random access memory (FRAM) applications. BLSFs are also better candidates because of their higher Curie points. Recently, we have carried out computer simulation in atomic scale in order to predict the energies associated with the accommodation of aliovalent and isovalent dopants (Pb 2+, Al3+, Ga3+, In3+, Ta 5+) in the Aurivillius structure of Ba2Bi 4Ti5O18. In this work, the predicted stable phases were synthesized using solid state reactions and their products then were characterized using powder X-ray diffraction method. The cell parameters were determined using Rietveld refinement in orthorhombic system with space group of B2cb. The cell parameters for Ba2Bi4Ti5O 18 doped with Pb2+, Al3+, Ga3+, In3+, Ta5+ were a=5.5006(6) b=5.4990(5) c=50.5440(7)Å; a=5.5012(4) b=5.4986(8) c=50.5449(7)Å; a=5.5006(3) b=5.4999(3) c=50.5437(9)Å; a=5.5007(4) b=5.4989(7) c=50.5446(6)Å; and a=5.5000(5) b=5.4995(8) c=50.5436(6)Å. Results from the ferroelectric properties measurement for Ba2Bi4Ti5O 18 doped with Pb2+, Al3+, Ga3+, In3+, Ta5+ were Pr=16.7μC/cm2, Ec=35.1kV/cm; Pr=15.9μC/cm2, E c=33.8kV/cm; Pr=15.6μC/cm2, E c=34.2kV/cm; Pr=15.3μC/cm2, E c=34.0kV/cm; Pr=16.9μC/cm2, E c=35.6kV/cm.

Original languageEnglish
Title of host publicationNeutron and X-Ray Scattering in Materials Science and Biology - Proceedings of the International Conference on Neutron and X-Ray Scattering 2007
Pages117-121
Number of pages5
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventInternational Conference on Neutron and X-ray Scattering 2007, ICNX 2007 - Serpong and Bandung, India
Duration: 23 Jul 200731 Jul 2007

Publication series

NameAIP Conference Proceedings
Volume989
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Neutron and X-ray Scattering 2007, ICNX 2007
Country/TerritoryIndia
CitySerpong and Bandung
Period23/07/0731/07/07

Keywords

  • Aurivillius phase
  • Ba BiTiO
  • Ferroelectric properties
  • Rietveld refinement

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