Specific features of the flexomagnetoelectric effect in (210)-oriented ferrite-garnet films
DOI:
https://doi.org/10.54708/26587572_2026_8326123Keywords:
Flexomagnetoelectric effect, inhomogeneous magnetoelectric interaction, domain wall, orientational phase diagram, phase transitionAbstract
This study investigates – both theoretically and through modeling – the influence of an electric field on the structure and properties of 180° domain walls (specifically, the flexomagnetoelectric effect) in a (210)-oriented ferrite-garnet film characterized by inhomogeneous magnetoelectric interaction. The topic is significant due to the potential for current-free control of micromagnetic structures in magnetic materials using electric fields, a capability crucial for developing next-generation, energy-efficient spintronic devices. The study examines potential structural transformations of 180° domain walls resulting from changes in film parameters, accounting for the contributions of combined anisotropy (uniaxial, orthorhombic, and cubic). It is demonstrated that, in certain cases, an abrupt change in magnetization orientation occurs – specifically, a first-order spin-reorientation phase transition within the system. This transition is accompanied by a sign change in the integral polarization: its absolute value reaches a maximum as the critical point is approached from either side, followed by an abrupt reversal of sign. These findings are novel; they broaden our understanding of the physics of phase transitions in magnetoelectric materials and indicate the possibility of controlling the charge state of domain walls via an electric field.References
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