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.
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Turutin et al (AAM) - Appl. Phys. Lett. 112, 262906 (2018).pdf
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- Publication date:
- June 25, 2018
- DOI:
-
- Grants:
-
European Commission:
- SPINMULTIFILM - Physical principles of the creation of novel SPINtronic materials on the base of MULTIlayered metal-oxide FILMs for magnetic sensors and MRAM (778308)
- Related identifiers:
- New versions
- 10.1063/1.5038014 (Journal article)
- License (for files):
- Creative Commons Attribution 4.0 International