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Compliance-Free Pulse Forming of Filamentary RRAM



Pragya Shrestha, David M. Nminibapiel, Jihong Kim, Helmut Baumgart, Kin (Charles) Cheung, Jason Campbell


Despite the overwhelming effort to improve the efficacy of resistive random access memory (RRAM), the underlying physics governing RRAM operation have proven elusive. A survey of the recent literature almost universally indicates that the remaining glaring issues center around variability as well as endurance. The initial filamentary "forming" process is often linked to these problems. This work details our recent efforts to bring the forming process under control and the resulting improvements in RRAM viability in hafnia-based devices. We track the forming process via a "forming energy" metric that allows for filament optimization. By removal of all current compliance elements, and their associated parasitics, a targeted forming energy is achieved using ultrashort voltage pulses. By tailoring the forming energy, we show remarkable endurance window control.
Proceedings Title
ECS Transactions: PRIME 2016
Conference Dates
October 2-7, 2016
Conference Location
Honolulu, HI, US
Conference Title


Shrestha, P. , Nminibapiel, D. , Kim, J. , Baumgart, H. , Cheung, K. and Campbell, J. (2016), Compliance-Free Pulse Forming of Filamentary RRAM, ECS Transactions: PRIME 2016, Honolulu, HI, US, [online],, (Accessed April 12, 2024)
Created September 30, 2016, Updated April 7, 2022