Ferroelectric Field Effect on the Magnetic Properties of La[sub 0.75]Sr[sub 0.25]MnO[sub 3]∕Pb(Zr[sub 0.5]Ti[sub 0.5])O[sub 3]∕La[sub 0.75]Sr[sub 0.25]MnO[sub 3] Heterostructures

Magnetic Field Sensing by Exploiting Giant Nonstrain-Mediated Magnetodielectric Response in Epitaxial Composites

“…The initial magnetic properties of the LSMO films were found to degrade following PZT deposition. In prior reports, it has been shown that the modulation of the magnetic properties in an epitaxial ME composite results from interface charge-mediated converse ME coupling − and strain-mediated ME coupling across the ferroelectric/ferromagnetic interface. − In the case of interface charge-mediated converse ME coupling, the interfacial magnetization is changed due to electrostatic charge accumulation at the PZT/LSMO interface from ferroelectric spontaneous polarization. ,− Prior studies have shown that interfacial charge accumulation modulates the valence state of Mn from the high spin state Mn 3+ (S = 2) to the low spin state Mn 4+ (S = 3/2) near the interface. This results in an interfacial ferromagnetic to antiferromagnetic phase transition in the accumulation state and, thereby, changes the magnetic moment of LSMO.…”