High-temperature multiferroic magnetoelectric sensors

Magnetoelectric (ME) sensors are an important tool to detect weak magnetic fields in the industry; however, date, there no high-quality ME available for high-temperature environments such as engines, deep underground, and outer space. Here, a 0.364BiScO3–0.636PbTiO3 piezoelectric ceramic Terfenol-D alloy with Curie temperature of 450 380 °C, respectively, were bonded together by inorganic glue achieve sensor. The shows d33 coefficient 780 pC/N at 420 has high maximum stress 9.12 MPa even 300 °C. As result, sensor exhibits αE 2.008, ∼1.455, ∼0.906 V cm−1 Oe−1 20, 200, 350 respectively. Most importantly, field detecting precision is small 42 nT 20–350 provides effective solution detection harsh environments.