Magnetic Immunity in STT-MRAM a Rational Approach to a Manageable Challenge
Year: 2026
Type: conference-paper
Abstract: As STT-MRAM adoption expands into automotive and other mission-critical domains, magnetic immunity becomes a key reliability concern due to the susceptibility of magnetic tunnel junctions to external magnetic fields. This paper presents a comprehensive overview on characterizing and engineering magnetic immunity in embedded STT-MRAM, including stand-by and active operation scenarios. The problem is addressed by angle-resolved reliability calculators for application-specific risk assessment, as well as technological improvements to enhance the writability against magnetic fields and architectural strategies such as magnetically immune memory subsections to safeguard critical functions despite worst-case attacks. Our findings demonstrate that, with proper characterization and mitigation, magnetic immunity can be managed as a controlled aspect of overall memory reliability, supporting the deployment of STTMRAM in safety-relevant systems.
Authors: Johannes Mueller, Frank Schlaphof, Patrick Scharf, Abhishek Talapatra, Daniel Sgriess, Violetta Sessi, Marco Mansueto, Daniel Sanchez-Hazen, Tobias Hula, Lakshmi Ramasubramanian, Aleksandra Titova, David Salomoni, Thomas Merbeth, Bert Pfefferling, Hongsik Hoon, Oliver Kallensee, Steven Soss
Institution: GlobalFoundries (Germany)
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7168257556