Deterministic multi-level spin orbit torque switching using He+ microscopy patterning
Jinu Kurian (1), Aleena Joseph (1), Salia Cherifi-Hertel (1), Ciaran, Fowley (2), Gregor Hlawacek (2), Peter Dunne (2), Michelangelo Romeo (1),, Gwena\"el Atcheson (3), J. M. D. Coey (3), Bernard Doudin (1), ((1), Universit\'e de Strasbourg, CNRS, Strasbourg
TL;DR
This paper demonstrates a method to achieve deterministic multi-level magnetic switching using He+ ion patterning on Pt/Co/W films, enabling scalable and controllable spintronic devices.
Contribution
It introduces a novel patterning technique with He+ ions to control multi-level switching in magnetic films, advancing spintronic device scalability.
Findings
Successful patterning of magnetic anisotropy landscapes.
Full deterministic control over switching positions and order.
Potential for scalable multilevel spintronic devices.
Abstract
He ion irradiation is used to pattern multiple areas of Pt/Co/W films with different irradiation doses in Hall bars. The resulting perpendicular magnetic anisotropy landscape enables selective multilevel current-induced switching, with full deterministic control of the position and order of the individual switching elements. Key pattern design parameters are specified, opening a way to scalable multilevel switching devices.
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Taxonomy
TopicsAdvanced Memory and Neural Computing · Magnetic properties of thin films · Neural Networks and Applications