Magnetoelectric surface acoustic wave resonator with ultrahigh magnetic field sensitivity

Liang Huang; Dandan Wen; Zhiyong Zhong; Huaiwu Zhang; Feiming Bai

Magnetoelectric surface acoustic wave resonator with ultrahigh magnetic field sensitivity

Materials Science 2014-05-20 v2

Authors: Liang Huang , Dandan Wen , Zhiyong Zhong , Huaiwu Zhang , Feiming Bai

Abstract

A magnetoelectric surface acoustic wave (MESAW) type device based on piezoelectric/magnetostrictive heterostructure was proposed to use as weak magnetic field sensor. Unlike conventional magnetoelectric bulk laminates or film stacks collecting magnetic field induced electrical charge, the MESAW detects the shift of the center frequency, which highly depends on the magnetic field due to the giant delta E effect and the phase velocity dispersion. The magnetic field sensitivity can reach 10^(-11) Tesla in consideration of 100 Hz frequency accuracy. Additionally, the unique working mechanism of MESAW allows a broadband detection of weak magnetic field even with no bias magnetic field.

Keywords

magnetoelectric surface acoustic wave MESAW magnetic field sensor piezoelectric/magnetostrictive heterostructure delta E effect phase velocity dispersion frequency shift

Cite

@article{arxiv.1405.4076,
  title  = {Magnetoelectric surface acoustic wave resonator with ultrahigh magnetic field sensitivity},
  author = {Liang Huang and Dandan Wen and Zhiyong Zhong and Huaiwu Zhang and Feiming Bai},
  journal= {arXiv preprint arXiv:1405.4076},
  year   = {2014}
}

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19 pages, 8 figures

Magnetoelectric surface acoustic wave resonator with ultrahigh magnetic field sensitivity

Abstract

Keywords

Cite

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