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oai:docta.ucm.es:20.500.14352/1235842025-09-02T00:14:22Zcom_20.500.14352_14col_20.500.14352_15

Voltage-controlled rotation of magnetic anisotropy in the Ni 90Fe 10/BaTiO 3(001) heterostructure Begué Gracia, Adrián Khaliq, M. W. Cotón, Noelia Lorenzo Feijoó, Iker Niño, Miguel Ángel Foerster, Michael Ranchal Sánchez, Rocío 538.9 Electric-field control Polarization Física de materiales 2211 Física del Estado Sólido © 2025 The Author(s) Margarita Salas fellowship In this work, we demonstrate the voltage control of magnetic anisotropy in a strain-mediated Ni 90 Fe 10 /BaTiO 3 (001) heterostructure. In the pristine state of the heterostructure, the magneto-optical Kerr effect measurements show a transcritical hysteresis loop for the Ni 90 Fe 10 film, indicating a weak perpendicular anisotropy. This was further confirmed by X-ray magnetic circular dichroism – photo-emission electron microscopy, revealing stripe domains in this film. X-ray diffraction analysis of the BaTiO 3 substrate under varying electric fields was used to analyze the orientation of ferroelectric domains. These results indicated that BaTiO 3 exhibits two distinct states depending on the applied electric field: one with domains aligned with the electric field and another with random domain orientation when the field is removed. After substrate poling, the Ni 90 Fe 10 layer switches from weak perpendicular anisotropy to an in-plane uniaxial magnetic anisotropy, with the in-plane direction of anisotropy being controllable by 901 through an electric field. This effect is due to an efficient strain transfer from BaTiO 3 to the Ni 90 Fe 10 lattice, induced by ferroelectric polarization, as shown by XRD. Remarkably, this rotation of the magnetic anisotropy leads to an enhanced converse magnetoelectric coupling value of 1.43 ms m 1 , surpassing previously reported values for other BaTiO 3 -based heterostructures by an order of magnitude. These results emphasize the potential of Ni 90 Fe 10 alloys for next-generation magnetoelectric devices. European Commission Ministerio de Ciencia e Innovación (España) Agencia Estatal de Investigación (España) Depto. de Física de Materiales Fac. de Ciencias Físicas Instituto de Magnetismo Aplicado (IMA) TRUE pub 2025-09-01T16:00:21Z 2025-09-01T16:00:21Z 2025 journal article VoR https://hdl.handle.net/20.500.14352/123584 XXXX-XXXX 10.1039/d5ma00275c 2633-5409 eng info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122980OB-C51/ES/ESTUDIOS DE FENOMENOS ATOMISTICOS EN MATERIALES MULTIFUNCIONALES A TRAVES DE TECNICAS IN-SITU/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122980OB-C54/ES/MICROSCOPIA Y ESPECTROSCOPIA DE RAYOS-X DE EFECTOS SPIN-ORBITA EN CONDICIONES IN-OPERANDO/ Begué, A., Khaliq, M. W., Cotón, N., Lorenzo-Feijoo, I., Niño, M. A., Foerster, M., & Ranchal, R. (2025). Voltage-controlled rotation of magnetic anisotropy in the Ni 90 Fe 10/BaTiO 3 (001) heterostructure. Materials Advances, 6(15), 5295-5302. Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ open access application/pdf Royal Chemical Society of Chemistry