Uniaxial magnetic anisotropy was imposed on a CoFeB film by applying an in-plane magnetic field during growth. Electrically driven strain from a ferroelectric 0.68Pb(Mg 1/3 Nb 2/3 )O 3 -0.32PbTiO 3 (011) substrate resulted in giant magnetoelectric effects, whose coupling constant peaked at a record value of ∼8.0 × 10 -6 s m -1 . These large magnetoelectric effects arose due to non-volatile 90° rotations of the magnetic easy axis, reflecting a competition between the fixed growth anisotropy and the voltage-controlled magnetoelastic anisotropy. In contrast to previous work, our non-volatile rotations did not require the assistance of an applied magnetic field or the setting of an in-plane substrate polarization prior to deposition.

Giant non-volatile magnetoelectric effects via growth anisotropy in Co 40 Fe 40 B 20 films on PMN-PT substrates / Wang, J.; Pesquera, D.; Mansell, R.; Van Dijken, S.; Cowburn, R. P.; Ghidini, M.; Mathur, N. D.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 114:9(2019), p. 092401. [10.1063/1.5078787]

Giant non-volatile magnetoelectric effects via growth anisotropy in Co 40 Fe 40 B 20 films on PMN-PT substrates

Ghidini, M.
;
2019

Abstract

Uniaxial magnetic anisotropy was imposed on a CoFeB film by applying an in-plane magnetic field during growth. Electrically driven strain from a ferroelectric 0.68Pb(Mg 1/3 Nb 2/3 )O 3 -0.32PbTiO 3 (011) substrate resulted in giant magnetoelectric effects, whose coupling constant peaked at a record value of ∼8.0 × 10 -6 s m -1 . These large magnetoelectric effects arose due to non-volatile 90° rotations of the magnetic easy axis, reflecting a competition between the fixed growth anisotropy and the voltage-controlled magnetoelastic anisotropy. In contrast to previous work, our non-volatile rotations did not require the assistance of an applied magnetic field or the setting of an in-plane substrate polarization prior to deposition.
Giant non-volatile magnetoelectric effects via growth anisotropy in Co 40 Fe 40 B 20 films on PMN-PT substrates / Wang, J.; Pesquera, D.; Mansell, R.; Van Dijken, S.; Cowburn, R. P.; Ghidini, M.; Mathur, N. D.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 114:9(2019), p. 092401. [10.1063/1.5078787]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2858050
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