Explainable AI-based physical theory for advanced materials design: Scientists develop an 'extended Landau free energy model' for causal analysis and visualization in nano-magnetic devices with AI and topology

Microscopic image data is key to developing low-power, high-speed electronic devices. However, the complex interactions in nanoscale magnetic materials are difficult to understand. A research group has now realized a new functional design theory called 'extended Landau free energy model' that combines topology and AI with free energy to automate the interpretation of the microscopic image. This model illustrates the physical mechanism and critical location of magnetization reversal and proposes a device structure with low energy consumption.