About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Dielectric Materials and Electronic Devices
|
| Presentation Title |
Cobalt Ferrite–PZT Composite Sensor Assembled at Room Temperature for High-Sensitivity Magnetoelectric Detection |
| Author(s) |
Luiz Fernando Cotica, Lilian Nunes Pereira, Gustavo Sanguino Dias, Ivair Aparecido Santos, Ruyan Guo, Amar Bhalla |
| On-Site Speaker (Planned) |
Luiz Fernando Cotica |
| Abstract Scope |
Magnetoelectric (ME) composites, which combine magnetic and electric phases, are attracting significant attention for their ability to detect low-frequency signals, which are essential for biosignal monitoring. This study presents a room-temperature sensor constructed from cobalt ferrite (CoFe₂O₄) nanoparticles and piezoelectric PZT fibers, preserving the functional properties of the materials while avoiding the formation of unwanted secondary phases. A readout system was developed utilizing an AD620 instrumentation amplifier and a Python-based lock-in amplifier for real-time analysis. The sensor exhibited a resonance frequency of 82 kHz and effectively responded to oscillating magnetic fields at frequencies of 125 Hz and 2 Hz, producing output amplitudes of 0.15 mV and 0.11 mV, respectively, with signal-to-noise ratios of 15.33 and 10.72. These findings suggest that room-temperature ME sensors are promising candidates for biomedical applications and low-field signal detection. |