Abstract
We study the transport properties in different modes of FRAM elements based on ferroelectric Hf0.5Zr0.5O2 thin films. The leakage currents in Hf0.5Zr0.5O2 are described by phonon-assisted tunneling between traps. Comparison experimental data with results of the simulations allows us to extract the evaluation of the charge trap density during endurance. A hypothesis about role of oxygen vacancies in fatigue is discussed.
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