Development of a Capacitive Temperature Sensor Using a Lead-Free Ferroelectric Bi(Fe_2/3Ta_1/3)O₃ Ceramic

Ceramic materials have many striking prospects as temperature sensors. Still, some inevitable shortcomings comprising toxicity, low biocompatibility, extensive response well recovery times, poor sensitivity, and hysteresis obstruct them from various progressive uses. Therefore, in this current exploration, a capacitive sensor has been designed developed using lead-free ferroelectric ceramic Bi(Fe 2/3 Ta xmlns:xlink="http://www.w3.org/1999/xlink">1/3 )O xmlns:xlink="http://www.w3.org/1999/xlink">3 (BFT) by solid-state sintering technique. Compared with the conventional sensor, proposed BFT-based relatively high sensitivity of 280 fF/°C, fast time (4.27 s), (7.39 s). The provides reversible excellent repeatability over multiple cycles. sensor’s recorded for thirty days to confirm long-term stability. sensing properties non-toxic BFT make it very promising electronic component development high-performance sensors advanced applications.