Surface acoustic wave magnetic field sensors (A09)

• Subject Area: Synthesis and Properties of Functional Materials ; Microsystems
• Term: since 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 286471992

The project explores the use of Love wave surface acoustic wave devices in combination with the E-effect for broadband detection of weak magnetic fields. Magnetic noise was determined in advance to be the largest limiting factor with regard to the detection limit. For this reason, a model is to be derived that describes the origin of this noise. Based on this model, low-noise magnetostrictive multilayer systems are to be developed and characterized for this sensor concept. In addition, the single-crystal and thin film-based SAW sensors are examined for their operating frequency, sensor design, and optimal working point.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1261: Magnetoelectric Sensors: From Composite Materials to Biomagnetic Diagnostics
• Applicant Institution: Christian-Albrechts-Universität zu Kiel
• Project Heads: Dr. Fabian Lofink; Professor Dr.-Ing. Eckhard Quandt