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

Kenji Ueda; Hitoshi Tabata; Tomoji Kawai

doi:10.1063/1.124420

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

Kenji Ueda, Hitoshi Tabata, Tomoji Kawai

Research output: Contribution to journal › Article › peer-review

202 Citations (Scopus)

Abstract

The (Bi_0.7Ba_0.3)(Fe_0.7Ti_0.3)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 P_r is 2.5 μC/cm² and E_C is 533 kV/cm, and the residual magnetization (M_r) is 0.2 emu/g and coercive field (H_C) 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 language	English
Pages (from-to)	555-557
Number of pages	3
Journal	Applied Physics Letters
Volume	75
Issue number	4
DOIs	https://doi.org/10.1063/1.124420
Publication status	Published - 1999 Jul 26
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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.",

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AU - Ueda, Kenji

AU - Tabata, Hitoshi

AU - Kawai, Tomoji

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Y1 - 1999/7/26

N2 - 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.

AB - 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.

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

Abstract

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