Coexistence of ferroelectricity and ferromagnetism in BiFeO3-BaTiO3 thin films at room temperature

Kenji Ueda, Hitoshi Tabata, Tomoji Kawai

Research output: Contribution to journalArticlepeer-review

198 Citations (Scopus)

Abstract

The (Bi0.7Ba0.3)(Fe0.7Ti0.3)O3 solid solution films were fabricated by pulsed-laser ablation technique. The films exhibit both ferroelectricity and ferromagnetism above room temperature. Clear ferroelectric and ferromagnetic hysteresis loops were observed. The Pr is 2.5 μC/cm2 and EC is 533 kV/cm, and the residual magnetization (Mr) is 0.2 emu/g and coercive field (HC) is 200 Oe, respectively. Film-thickness dependence of electric and magnetic properties is also examined. The dielectric constants of the film decreases with reducing the film thickness and the magnetic Curie temperature is almost constant independent of the film thickness.

Original languageEnglish
Pages (from-to)555-557
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number4
DOIs
Publication statusPublished - 1999 Jul 26
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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