TY - JOUR
T1 - High-performance magnetoelectric composite with low DC bias magnetic field for detecting ultra-weak magnetic field
AU - Xu, Xueping
AU - Wu, Weiwei
AU - Zhu, Tao
AU - Pei, Menghan
AU - Zhang, Xiaoyan
AU - Han, Qinkai
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2025/6
Y1 - 2025/6
N2 - Based on a piezoelectric layer of piezoelectric macro fiber composite (MFC) and a magnetostrictive layer of iron-based amorphous or nanocrystalline alloy, a flexible laminated magnetoelectric composite magnetic field sensor has achieved ultra-high sensitivity and the detection of ultra-weak magnetic fields. The magnetoelectric sensor of amorphous alloy with lower loss (ME-A) exhibits a response voltage. The ME-A sample's optimal DC bias magnetic field has a small value of 5.04 Oe, corresponding to the magnetoelectric voltage coefficient of 18.30 V/(cm‧Oe). In addition, the ME-A sensor exhibits excellent linear response characteristics to ultra-weak AC magnetic field as low as 1.90 × 10−5 Oe at the optimal frequency of 20.50 kHz, with a sensitivity of up to 542 mV/Oe. Specifically, the ME-A sample provides real-time sensing of stepped magnetic field changes, achieving a detection resolution as low as 1.54 × 10−5 Oe. The ME-A sensor successfully detects stray magnetic fields below 1.0 × 10−3 Oe generated by motors at different speeds. Overall, ME-A laminated structure magnetoelectric composite with excellent magnetoelectric properties can achieve ultra-weak magnetic field detection and become a new generation of flexible magnetic field sensors.
AB - Based on a piezoelectric layer of piezoelectric macro fiber composite (MFC) and a magnetostrictive layer of iron-based amorphous or nanocrystalline alloy, a flexible laminated magnetoelectric composite magnetic field sensor has achieved ultra-high sensitivity and the detection of ultra-weak magnetic fields. The magnetoelectric sensor of amorphous alloy with lower loss (ME-A) exhibits a response voltage. The ME-A sample's optimal DC bias magnetic field has a small value of 5.04 Oe, corresponding to the magnetoelectric voltage coefficient of 18.30 V/(cm‧Oe). In addition, the ME-A sensor exhibits excellent linear response characteristics to ultra-weak AC magnetic field as low as 1.90 × 10−5 Oe at the optimal frequency of 20.50 kHz, with a sensitivity of up to 542 mV/Oe. Specifically, the ME-A sample provides real-time sensing of stepped magnetic field changes, achieving a detection resolution as low as 1.54 × 10−5 Oe. The ME-A sensor successfully detects stray magnetic fields below 1.0 × 10−3 Oe generated by motors at different speeds. Overall, ME-A laminated structure magnetoelectric composite with excellent magnetoelectric properties can achieve ultra-weak magnetic field detection and become a new generation of flexible magnetic field sensors.
KW - Detection limit
KW - Low DC bias magnetic field
KW - Magnetic field response
KW - Magnetoelectric composite
KW - Ultra-weak magnetic field
UR - https://www.scopus.com/pages/publications/105000494704
U2 - 10.1016/j.coco.2025.102371
DO - 10.1016/j.coco.2025.102371
M3 - 文章
AN - SCOPUS:105000494704
SN - 2452-2139
VL - 56
JO - Composites Communications
JF - Composites Communications
M1 - 102371
ER -