铁酸铋的挠曲磁电效应
Flexomagnetoelectric effect in bismuth ferrite
摘要：
多铁性材料中的非均匀磁电效应与液晶中的挠曲电效应有着深刻的相似性。这种相似性导致了由自旋调制引起的挠曲磁电极化。弯曲磁电极化的理论估计与在临界磁场200 kOe下自旋摆线抑制时观测到的磁电依赖性极化跳跃值（~ 20 μ C/m^2）一致。
英文摘要：
There is a profound analogy between inhomogeneous magnetoelectric effect in multiferroics and flexoelectric effect in liquid crystals. This similarity gives rise to the flexomagnetoelectric polarization induced by spin modulation. The theoretical estimations of flexomagnetoelectric polarization agree with the value of jumps of polarization in magnetoelectric dependences (~20muC/m^2) observed at spin cycloid suppression at critical magnetic field 200kOe.
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