Electric field switching of the magnetic anisotropy of a ferromagnetic layer exchange coupled to the multiferroic compound BiFeO3.

{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "electric field",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "magnetic anisotropy direction in Permalloy layer",
    "magnetoelectric coupling between BiFeO3 polarization and magnetic spins"
  ],
  "main_findings": "A Permalloy layer on a BiFeO3 single crystal acquires an easy magnetic direction aligned with the cycloidal antiferromagnetic propagation vector in BiFeO3, attributed to direct magnetic coupling with canted spins. An electric field-induced change in BiFeO3 polarization can toggle the ferromagnet’s anisotropy direction via the magnetoelectric effect.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "Permalloy",
    "BiFeO3",
    "multiferroic",
    "magnetoelectric effect",
    "electric field switching",
    "magnetic anisotropy",
    "exchange coupling",
    "cycloid",
    "antiferromagnetism"
  ],
  "suggested_hubs": []
}