| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Enhanced mass sensitivity of self-biased magnetoelastic sensors by annealing-induced nanocrystallization. |
| Author(s) |
Andoni Lasheras, J.S. Garitaonandia, iban Quintana, Jose Luis Vilas, Ana Catarina Lopes |
| On-Site Speaker (Planned) |
Andoni Lasheras |
| Abstract Scope |
The demand for cost-effective, wireless sensing technologies requires the development of efficient sensors for accurate external agent detection. Magnetoelastic resonators offer a promising alternative to traditional systems by combining simplicity, efficiency, and optimization. The present work investigates thermal annealing to enhance magnetoelastic resonators' sensitivity, highlighting the positive impact of crystallization processes.
Experimental results show that increased annealing temperatures improve the resonance frequency and quality factor of the resonators. Notably, sensors annealed at 550ºC exhibited a 45% increase in resonance frequency and a 1700% increase in quality factor compared to as-quenched platforms. In addition, the nanocrystallization induction leads to a self-biased resonance, consequence of the intrinsic magnetization resulting from the crystallization in Fe2B and FeCo phases.
Gold deposition experiments demonstrate a 40% increase in sensitivity and a 38% improvement in accuracy over as-quenched sensors. These results underscore the significance of thermal treatments in advancing magnetoelastic mass sensors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, |