Abstract
This paper reports the demonstration of an array of piezoelectric/magnetostrictive micro electromechanical system (MEMS) magnetic resonant sensors (PM-MRS) for multi-axis magnetic field (H-field) detection. An array of 43 MHz aluminum nitride (AlN) piezoelectric resonators vibrating along different in-plane directions (θ) but coated with a magnetostrictive layer (Fe65.6Co9.4B25) with the same easy axis (EZ) exhibit unique mechanical/electrical responses as a function of the applied H-field and its direction, enabling a high resolution multi-axis H-field detection. The sensor design yields resonators with a high quality factor (Q ∼ 1500) and electromechanical coupling coefficient (kt2 ∼ 2%) - the highest value ever reported for an AlN PM-MRS. This sensor system paves the way for low power magnetometers that enables single-chip multi-axis H-field detection.
| Original language | English |
|---|---|
| Title of host publication | 2017 IEEE 30th International Conference on Micro Electro Mechanical Systems, MEMS 2017 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 109-112 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781509050789 |
| DOIs | |
| State | Published - 23 Feb 2017 |
| Event | 30th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2017 - Las Vegas, United States Duration: 22 Jan 2017 → 26 Jan 2017 |
Publication series
| Name | Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS) |
|---|---|
| ISSN (Print) | 1084-6999 |
Conference
| Conference | 30th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2017 |
|---|---|
| Country/Territory | United States |
| City | Las Vegas |
| Period | 22/01/17 → 26/01/17 |
Bibliographical note
Publisher Copyright:© 2017 IEEE.