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Is anyone putting R&D into this besides Global Foundries? I've seen their name pop up in every spintronics announcement lately.

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Probably not since there aren't enough competitors left to actually invest in chips. If you don't hear Intel, TSMC or Global Foundaries putting R&D into something then you have the way out there research of academia.

Maybe a random startup or two are investigating this but those are academics that figured something out from a grant and are attempting to make a company out of it. The road to beating silicon is a long one.

TI and Cypress through Ramtron has done quite a bit of work incorporating ferroelectric materials into CMOS processes and such for FeRAMs mostly. Obviously RAMs are not transistors but the work is certainly relevant. Like the article says, the large feature size for ferroelectrics has mostly been the limitation for ferroelectric applications.

GloFo is a major proponent of MRAM not sure how invested they are in spintronics in the general.

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