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Journal Articles Applied Physics Letters Year : 2008

Magnetic field induced ferroelectric loop in Bi0.75Sr0.25FeO3−δ


Magnetic field induced ferroelectric hysteresis loop observed in Bi0.75Sr0.25FeO3−δ is of prime importance. The coexistence of antiferromagnetism and weak ferromagnetism is responsible for the original magnetoelastic and magnetoferroelectric properties. Upon external magnetic field application, the existence of a magnetostrictive effect supports a structural transition toward a homogeneous antiferromagnetic and ferroelectric phase. The magnetic field induced polarization is among the highest reported for BiFeO3 based systems in either thin film or bulk form (Pr=96μC/cm2 at 10T) while the ferroelectric coercive field is among the lowest reported (Hc=661V∕cm at 10T ). These properties make this material very attractive for technical applications. We acknowledge valuable discussions with Ranjith Ramadurai and financial support to the SEMONE french ANR project.

Dates and versions

hal-02264104 , version 1 (06-08-2019)



Bohdan Kundys, Antoine Maignan, Christine Martin, Ninh Nguyen, Charles Simon. Magnetic field induced ferroelectric loop in Bi0.75Sr0.25FeO3−δ. Applied Physics Letters, 2008, 92 (11), pp.112905. ⟨10.1063/1.2890714⟩. ⟨hal-02264104⟩
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