Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 65: Poster 2
MA 65.21: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-OG1
Field-free manipulation of spin structure in perpendicularly magnetized thin films — •Mariia Filianina1, Samridh Jaiswal1,2, Tetsuya Hajiri3, Alexander Kronenberg1, and Mathias Kläui1 — 1Institute of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany. — 2Singulus Technologies AG, Kahl am Main, 63796, Germany. — 3Department of Crystalline Materials Science, Nagoya University, Nagoya 464-8603, Japan
Recently there has been an immense interest for efficient methods of magnetization reversal, in particular by means of electric fields, as recently realized in multiferroic systems. This approach is advantageous because of the low power required without any power-hungry constant current flow. It utilizes so called magnetostrictive coupling, which is the effect of lattice strain on magnetic properties resulting from spin-orbit interaction, such as anisotropy but also the Dzyaloshinskii-Moriya interaction (DMI). The DMI stabilizes chiral spin structures, in particular skyrmions, and possible applications can be facilitated by the control of this interaction [1,2].
In this contribution we report on manipulation of magnetization via electric field induced strain, observed for thin Co20Fe60B20 perpendicularly magnetized film, fabricated on top of the piezoelectric substrate with a W seed layer. The modification of the direct spin structure by strain was imaged by x-ray microscopy to reveal the impact of the strain on the anisotropy and DMI.
1. A. Fert et al., Nat. Nanotechnol. 8, 152 (2013).
2. S. Woo et al., Nat. Mater. 15, 501 (2016).