Impact of Flexoelectric Effect on Electro-mechanics of Moderate Conductors

Ferromagnetic-like behavior of Bi0.9La0.1FeO3–KBr nanocomposites

“…Different physical mechanisms can be responsible for the appearance of room-temperature ferromagnetism of ferroelectric Bi 1-x La x FeO 3 inclusions, while Bi 1-x La x FeO 3 is FE and purely AFM in the bulk[3]. Such mechanisms, in particular, are surface piezomagnetic effect existing near the surface of any antiferromagnetic due to the absence of spatial inversion center at the surface[40], flexo-magnetoelectric [41] and linear antiferrodistortiveantiferromagnetic[42] couplings, Vegard effect (so called "chemical pressure")[43,44] as well as omnipresent magnetic defects and/or impurities accumulation at the surface due to the strong lowering of their formation energy at the surface[45,46].According to this, different physical mechanisms should be considered to explain the unexpected experimental result for 0.5(BLFO)−0.5(KBr) and 0.7(BLFO)−0.3(KBr) nanocomposites (the model is shown in Fig…”