Open AccessComparison of characteristics of variable magnetic field magnetoelectric sensors based on bidomain lithium niobate, with active magnetic mass and self-biased Ni / Metglas gradient structure
Author(s) -
Oleg Sokolov,
V. S. Leontiev,
М. И. Бичурин
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1658/1/012053
Subject(s) - metglas , lithium niobate , magnetic field , materials science , bimorph , magnet , condensed matter physics , magnetostriction , nuclear magnetic resonance , physics , optoelectronics , piezoelectricity , composite material , quantum mechanics
The article is devoted to a theoretical comparison of the characteristics of two magnetoelectric sensors of an alternating magnetic field, operating without an external magnetizing field. The first sensor uses a bending mode in a bimorph lithium niobate with an active magnetic mass at the free end. The second sensor consists of lithium bimorph niobate and a self-biased Ni-Metglas gradient structure. The performed estimates show that a sensor with an active magnetic mass is more than 4 times superior to a sensor with a self-biased gradient structure in sensitivity to an alternating magnetic field. However, it has the advantage that by changing the mass of the magnets, the resonant frequency of the sensor can be controlled. In turn, a sensor with a self-biased gradient structure wins in terms of mass and size characteristics. The results obtained can be used to build promising variable magnetic field sensors for use in biomedicine.