Journal article Open Access

Magnetoelectric metglas/bidomain y + 140°-cut lithium niobate composite for sensing fT magnetic fields

Andrei V. Turutin; João V. Vidal; Ilya V. Kubasov; Alexander M. Kislyuk; Mikhail D. Malinkovich; Yuriy N. Parkhomenko; Svetlana P. Kobeleva; Oleg V. Pakhomov; Andrei L. Kholkin; Nikolai A. Sobolev

We investigated the magnetoelectric properties of a new laminate composite material based on y +140°-cut congruent lithium niobate piezoelectric plates with an antiparallel polarized “head-to-head” bidomain structure and metglas used as a magnetostrictive layer. A series of bidomain lithium niobate crystals were prepared by annealing under conditions of Li2O outdiffusion from LiNbO3 with a resultant growth of an inversion domain. The measured quasi-static magnetoelectric coupling coefficient achieved |αE31| = 1.9 V·(cm Oe)−1. At a bending resonance frequency of 6862 Hz, we found a giant |αE31| value up to 1704 V·(cm Oe)−1. Furthermore, the equivalent magnetic noise spectral density of the investigated composite material was only 92 fT/Hz1/2, a record value for such a low operation frequency. The magnetic-field detection limit of the laminated composite was found to be as low as 200 fT in direct measurements without any additional shielding from external noises.

Files (951.9 kB)
Name Size
Turutin et al (AAM) - Appl. Phys. Lett. 112, 262906 (2018).pdf
951.9 kB Download
All versions This version
Views 2323
Downloads 6464
Data volume 60.9 MB60.9 MB
Unique views 2121
Unique downloads 6161


Cite as