The FOXON project represents a groundbreaking effort to push the boundaries of oxide electronics by correlating electrical behavior with atomic structure during device operation. By successfully preparing fully operational TEM lamellas of oxide electronic devices using a novel Focused Ion Beam (FIB) preparation routine, the project overcomes a significant experimental bottleneck. This achievement enables in-situ electrical characterizations within a transmission electron microscope (TEM), providing valuable insights into local crystal defects under electric field and atomic positions under electrical bias. Furthermore, FOXON's innovative approach of using atomically resolved images as a basis for theoretical calculations to correlate the microstructure of insulators with their electrical properties in metal-insulator-metal (MIM)-RRAM devices represents a leap beyond the state of the art. This strategy enhances our fundamental understanding of device behavior and facilitates the development of predictive models for future device design and optimization. The project's impact extends beyond scientific advancements, with potential socio-economic implications. By gaining insights into the atomic-scale mechanisms governing device behavior, FOXON contributes to the development of more efficient and sustainable electronic devices. This could lead to reduced energy consumption in data centers, thereby minimizing their ecological footprint. Moreover, the project's focus on varactor heterostructures for tunable microwave technologies holds promise for enhancing mobile communication applications, potentially improving connectivity and efficiency in a digitally interconnected society. Overall, FOXON's efforts have the potential to revolutionize oxide electronics and drive innovation in related fields, with far-reaching implications for technological progress and societal well-being.
