Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 18: Spintronics
MA 18.5: Vortrag
Dienstag, 6. September 2022, 16:00–16:15, H47
Influence of dusting layers on the magneto-ionic response of Ta/X/CoFeB/Y/MgO/HfO2 thin film stacks — •Tanvi Bhatnagar-Schöffmann1, Aurélie Solignac2, Djoudi Ourdani3, Rohit Pachat1, Maria-Andromachi Syskaki5, Yves Roussigné3, Shimpei Ono6, Dafiné Ravelosona4, Jürgen Langer5, Mohamed Belmeguenai3, and Liza Herrera Diez1 — 1Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France — 2Université Paris-Saclay, CEA, CNRS, SPEC, 91191, Gif-sur-Yvette, France — 3Laboratoire des Sciences des Procédés et des Matériaux, CNRS-UPR 3407, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France — 4Spin-Ion Technologies, C2N, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France — 5Singulus Technologies AG, Hanauer Landstrasse 103, 63796 Kahl am Main, Germany — 6Central Research Institute of Electric Power Industry, Yokosuka, Kanagawa 240-0196, Japan
Here,we present the room temperature magneto-ionic control of magnetic anisotropy,coercivity and DMI in Ta/X/CoFeB/Y/MgO/HfO2 ,where X and Y are dusting layers of heavy metal elements (Pt,W) sharing different interfaces with CoFeB. Dusting layers at the bottom interface (Y) can define a system locked in a PMA state allowing for a reversible magneto ionic control of coercivity, while samples with dusting layers at the top interface (X) can allow for a full and reversible spin-reorientation transition. The intercalation of dusting layers of heavy metal elements in Ta/CoFeB/MgO stacks has the potential to fine tune magnetic properties.