LAYERS 9 – Flying the High Performance Ferro & Piezoelectrics Flag in the USA
Across the United States, universities are pushing the boundaries of ferroelectric and piezoelectric materials, leveraging Evatec’s CLUSTERLINE® 200 and MSQ Multi Source systems to drive new levels of performance in AlN and AlScN thin films. While the CLUSTERLINE® 200 is a proven high volume production tool for 6 inch and 8 inch AlN and AlScN processing, its flexible R and D setups combined with the MSQ’s capacity for up to four sputter sources in DC, RF or mixed modes enable rapid experimentation with compositions, stresses, and multilayer structures.
These capabilities support diverse research efforts in high frequency resonators, BAW and SAW devices, tunable passives, and ferroelectric memory concepts. Studies show how advanced AlScN films can overcome traditional frequency scaling limits using periodically poled piezoelectric structures, achieving significantly higher resonance frequencies without reducing film thickness. Universities are also exploring ultrathin ferroelectric layers down to a few nanometers, demonstrating strong c axis orientation and high breakdown fields suitable for next generation memory technologies.
High stress AlN and AlScN films produced on Evatec tools are also enabling the development of strain induced self rolled up membrane architectures. These allow compact three dimensional device designs created through standard two dimensional processing, offering new opportunities for miniaturized inductors, tunable capacitors, and multifunctional microsystems with minimal footprint and high performance.
In parallel, controlled co sputtering of advanced nitride alloys supports innovations in acoustic devices for emerging wireless frequency bands from sub 6 GHz to millimeter wave and beyond. Consistent film quality, uniformity, and reproducibility across substrates are essential as research moves closer to functional device prototypes.
Evatec tools also support the creation of high temperature MEMS sensors, where high quality AlN layers have demonstrated stable operation in extreme environments. This opens pathways for applications in areas such as hypersonics, gas turbines, and harsh environment monitoring. Together, these research activities highlight the critical role of Evatec’s flexible deposition platforms in advancing the next generation of MEMS, acoustics, and wireless technologies across North America.
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