Researchers develop a material that mimics how the brain stores information

Nanowerk  November 8, 2022
While a precise modulation of magnetism is achieved when voltage is applied, much more uncontrolled is the spontaneous evolution of magneto-ionic systems upon removing the electric stimuli. An international team of researchers (Spain, Italy, Belgium) has demonstrated a voltage-controllable N ion accumulation effect at the outer surface of CoN films adjacent to a liquid electrolyte, which allows for the control of magneto-ionic properties both during and after voltage pulse actuation (i.e., stimulated, and post-stimulated behavior, respectively). This effect, which takes place when the CoN film thickness is below 50 nm and the voltage pulse frequency is at least 100 Hz, is based on the trade-off between generation (voltage ON) and partial depletion (voltage OFF) of ferromagnetism in CoN by magneto-ionics. According to the researchers this effect may open opportunities for new neuromorphic computing functions, such as post-stimulated neural learning under deep sleep…read more. Open Access TECHNICAL ARTICLE

Graphical abstract. Credit: Mater. Horiz., 2022, Advance Article 

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