Love Wave Magnetic Field Sensor Modeling — from 1D to 3D Model

Three different finite element method (FEM) models of a surface acoustic wave (SAW) based magnetic field sensor with increasing complexity from one dimensional to three dimensional model are presented and compared. These sensors are designed to measure weak biomagnetic fields in an unshielded environment at room temperature, using a magnetostrictive layer at the surface to convert a magnetic signal to a change in SAW velocity.

[1]  M. Inoue,et al.  Local detection of magneto-surface-acoustic-wave in highly magnetostrictive amorphous film by light-probing technique , 1987 .

[2]  R. Bechmann,et al.  Elastic and Piezoelectric Constants of Alpha-Quartz , 1958 .

[3]  M. Goueygou,et al.  Legendre and Laguerre polynomial approach for modeling of wave propagation in layered magneto-electro-elastic media. , 2013, The Journal of the Acoustical Society of America.

[4]  Martina Gerken,et al.  Two-Dimensional Versus Three-Dimensional Finite-Element Method Simulations of Cantilever Magnetoelectric Sensors , 2013, IEEE Transactions on Magnetics.

[5]  E. Lee,et al.  Magnetostriction and Magnetomechanical Effects , 1955 .

[6]  U. Langer,et al.  Eigenvalue Problems in Surface Acoustic Wave Filter Simulations , 2006 .

[7]  Phillip Durdaut,et al.  Wide Band Low Noise Love Wave Magnetic Field Sensor System , 2018, Scientific Reports.

[8]  K. Mackay,et al.  Elastic properties of magnetostrictive thin films using bending and torsion resonances of a bimorph , 2000 .

[9]  Eva Gregorová,et al.  ELASTIC PROPERTIES OF SILICA POLYMORPHS – A REVIEW , 2013 .

[10]  J. Livingston,et al.  Magnetomechanical Properties of Amorphous Metals , 1982, April 16.

[11]  E. Quandt,et al.  Optimization of the /spl Delta/E-effect in thin films and multilayers by magnetic field annealing , 2002 .

[12]  Eckhard Quandt,et al.  Optimization of the ΔE effect in thin films and multilayers by magnetic field annealing , 2002 .