A lead-free high-Tc ferroelectric BaTi2O5: A first-principles study

Umesh Waghmare, Marcel H.F. Sluiter, Teiichi Kimura, Takashi Goto, Yoshiyuki Kawazoe

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

Ferroelectricity in BaTi2O5 was analyzed using first-principles calculations. The polarization of BaTi2O5 was found to be smaller than the perovskite ferroelectrics and its Curie temperature was higher and comparable to that of PbTiO3. The calculated piezoelectric constant was 2.02 C/m2. The results show that the properties of BaTi2O5 can be improved and it appeared a promising material for future lead-free high-temperature ferroelectrics.

Original languageEnglish
Pages (from-to)4917-4919
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number24
DOIs
Publication statusPublished - 2004 Jun 14

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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