Core Insights - A research team led by the Politecnico di Milano has developed the first integrated spin-wave device that operates without an external magnetic field, enabling full tunability [1] - This innovation is expected to be utilized in next-generation high-speed, low-power communication systems, paving the way for technologies that exceed current 5G and 6G standards [1] Group 1: Device Characteristics - The new device is miniaturized, measuring only 100×150 square micrometers, significantly smaller than current acoustic-based RF signal processing devices [1] - The core of the device consists of a spin waveguide made from magnetic materials, equipped with input and output antennas for RF signal input and reading [1] - The device can continuously vary the transverse magnetic field strength between 11 to 20.5 millitesla by precisely adjusting the distance between the micro-magnet and the magnetic flux concentrator [1] Group 2: Performance Metrics - Experimental results indicate that the device's operating frequency can be adjusted between 3 to 8 gigahertz, achieving a maximum phase modulation capability of approximately 120 degrees at 6 gigahertz [1] - The prototype device has demonstrated stable operation as a time delay line and phase shifter without the need for an external magnetic field, which are critical components in wireless communication systems [1] Group 3: Future Applications - The device is expected to integrate with micro-electromechanical systems (MEMS) for real-time reconfigurability during operation [2] - The micro-magnet used in the device maintains stable magnetic performance at temperatures up to 200°C and can generate the required magnetic field without additional energy consumption, making it suitable for practical applications [2] - This achievement marks a significant step in advancing magnonics technology from the laboratory to communication systems, bringing spin-wave chips closer to electronic device applications [2]

意大利米兰理工大学领导的研究团队研制出首个无需外加磁场的集成化自旋波器件，可实现完全调谐。 这一成果有望用于下一代高速、低功耗通信系统，并为未来远超当前5G和 6G标准的 通信技术提供新路 径。相关研究成果发表在最新一期《先进材料》杂志上。 ...