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

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

2008-02-20

arxiv.org/abs/0802.2877v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2890714

Magnetic field induced ferroelectric hysteresis loop observed in Bi0.75Sr0.25FeO3-delta 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 towards 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 forms (Pr=96 microC/cm2 at 10T) while the ferroelectric coercive field is among the lowest reported (Hc=661(V/cm) at 10T). These properties make this material very attractive for technical applications.

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