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Thermal Compact Modeling and Resistive Switching Analysis in Titanium Oxide-Based Memristors.

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This study introduces a new method for characterizing resistive switching devices by simultaneously measuring electrical and thermal responses. This approach accurately determines thermal resistance for improved circuit simulations.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Nanotechnology

Background:

  • Resistive switching devices are crucial for next-generation electronics.
  • Accurate thermal modeling is essential for device performance and reliability.
  • Current methods for thermal resistance extraction in these devices are often indirect.

Purpose of the Study:

  • To develop and validate a novel technique for extracting thermal resistance in resistive switching devices.
  • To correlate electrical and thermal behaviors using in-operando measurements.
  • To enhance compact models for circuit simulations by incorporating accurate thermal parameters.

Main Methods:

  • Fabrication of Au/Ti/TiO2/Au resistive switching devices.
  • Simultaneous electrical characterization (I-V curves) and scanning thermal microscopy for hot spot analysis.
  • Development of a COMSOL Multiphysics simulation model for temperature mapping.
  • Automatic numerical methods for calculating set/reset voltages and series resistance.

Main Results:

  • Direct correlation established between electrical and thermal responses.
  • Accurate thermal resistance values extracted using combined electrical and thermal measurements.
  • Device variability assessed through automated analysis of switching parameters.
  • Enhanced compact model incorporating experimental thermal resistance and series resistance.

Conclusions:

  • The presented technique offers a more direct and reliable method for thermal resistance extraction compared to traditional fitting methods.
  • The findings contribute to more accurate circuit simulations and improved design of resistive switching memory devices.
  • Simultaneous electrical-thermal analysis provides deeper insights into device physics and failure mechanisms.