Highly sensitive magnetic field sensor based on a metglas/bidomain lithium niobate composite shaped in form of a tuning fork
authors Turutin, AV; Vidal, JV; Kubasov, IV; Kisyuk, AM; Kiselev, DA; Malinkovich, MD; Parkhomenko, YN; Kobeleva, SP; Kholkin, AL; Sobolev, NA
nationality International
journal JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
author keywords Composite multiferroics; Magnetoelectric effect; Bidomain lithium niobate; Magnetic sensor; Tuning fork; Metglas
keywords LINBO3 PLATES; ACTUATORS; HYSTERESIS; MAGNETOELECTRICS; CRYSTAL; NOISE
abstract This study reports the creation of a highly sensitive, low-frequency magnetic field sensor based on a composite multiferroic consisting of a bidomain lithium niobate/metglas laminate shaped in form of a tuning fork. An efficient suppression of acoustic and thermal noises in the measurements of AC magnetic fields has been achieved. As a piezoelectric component we used a y + 128 degrees-cut lithium niobate single crystal. A metglas foil (serving as a magnetostrictive component) was antisymmetrically bonded to each fine of the tuning fork. The sensor demonstrated a 6.7 times increase of the sensitivity to magnetic fields as compared to a single-plate magnetoelectric (ME) sensor: the magnetic field detection limit was enhanced from 20 pT to 3 pT at a frequency of ca. 318 Hz, without any additional shielding from external noises. The advantages of the ME sensors based on bidomain lithium niobate over those based on PZT or PMN-PT are a much higher thermal stability, anhysteretic piezoelectric effect, large resistance to creep, lead-free nature and simple and cheap fabrication process. Ultimately, the tuning-fork ME sensors based on bidomain lithium niobate single crystals might be used in low frequency, ultra-sensitive, cheap and high-temperature magnetic field sensors for biomedical or space applications.
publisher ELSEVIER SCIENCE BV
issn 0304-8853
year published 2019
volume 486
digital object identifier (doi) 10.1016/j.jmmm.2019.04.061
web of science category Materials Science, Multidisciplinary; Physics, Condensed Matter
subject category Materials Science; Physics
unique article identifier WOS:000471859200013
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journal impact factor 3.046
5 year journal impact factor 2.717
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