Switching between Magnetic Bloch and Néel Domain Walls with Anisotropy Modulations.

Autor:	Franke KJA; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom., Ophus C; National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Schmid AK; National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Marrows CH; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2021 Sep 17; Vol. 127 (12), pp. 127203.
DOI:	10.1103/PhysRevLett.127.127203
Abstrakt:	It has been shown previously that the presence of a Dzyaloshinskii-Moriya interaction in perpendicularly magnetized thin films stabilizes Néel type domain walls. We demonstrate, using micromagnetic simulations and analytical modeling, that the presence of a uniaxial in plane magnetic anisotropy can also lead to the formation of Néel walls in the absence of a Dzyaloshinskii-Moriya interaction. It is possible to abruptly switch between Bloch and Néel walls via a small modulation of the in plane, but also the perpendicular, magnetic anisotropy. This opens up a route toward electric field control of the domain wall type with small applied voltages through electric field controlled anisotropies.
Databáze:	MEDLINE
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