Multimode delta-E effect magnetic field sensors with adapted electrodes

被引：57

作者：

Zabel, Sebastian ^{[1
]}

Reermann, Jens ^{[2
]}

Fichtner, Simon ^{[1
]}

Kirchhof, Christine ^{[1
]}

Quandt, Eckhard ^{[1
]}

Wagner, Bernhard ^{[3
]}

Schmidt, Gerhard ^{[2
]}

Faupel, Franz ^{[1
]}

机构：

[1] Univ Kiel, Inst Mat Sci, Fac Engn, Kaiserstr 2, D-24143 Kiel, Germany

[2] Univ Kiel, Inst Elect Engn, Fac Engn, Kaiserstr 2, D-24143 Kiel, Germany

[3] Fraunhofer Inst Silicon Technol ISIT, Fraunhoferstr 1, D-25524 Itzehoe, Germany

来源：

APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 22期

关键词：

THIN-FILMS;

D O I：

10.1063/1.4952735

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present an analytical and experimental study on low-noise piezoelectric thin film resonators that utilize the delta-E effect of a magnetostrictive layer to measure magnetic fields at low frequencies. Calculations from a physical model of the electromechanical resonator enable electrode designs to efficiently operate in the first and second transversal bending modes. As predicted by our calculations, the adapted electrode design improves the sensitivity by a factor of 6 and reduces the dynamic range of the sensor output by 16 dB, which significantly eases the requirements on readout electronics. Magnetic measurements show a bandwidth of 100 Hz at a noise level of about 100 pTHz(-0.5). Published by AIP Publishing.

引用

页数：4

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