论文信息 - Noise Performance of Magnetometers With Resonant Thin-Film Magnetoelectric Sensors

Noise Performance of Magnetometers With Resonant Thin-Film Magnetoelectric Sensors

Sensors based on materials with a giant magnetoelectric (ME) effect may be used to measure biomagnetic fields at room temperature. It is necessary to know the noise behavior of the whole detection unit. The noise level of a thin-film ME sensor was measured at room temperature, and suitable types of low-noise amplifiers were investigated. Noise measurements were carried out at room temperature. Results show a sensitivity value of 5.4 pT/ √Hz at a resonance frequency of 330 Hz. Furthermore, the signal-to-noise ratio was investigated in order to improve the sensitivity of the sensor.

[1] S. Dong,et al. Detection of pico-Tesla magnetic fields using magneto-electric sensors at room temperature , 2006 .

[2] J. A. Connelly,et al. Low noise electronic system design , 1993 .

[3] Christophe Gorecki,et al. Static and dynamic characterization of AlN-driven microcantilevers using optical interference microscopy , 2009 .

[4] Dwight D. Viehland,et al. Noise and scale effects on the signal-to-noise ratio in magnetoelectric laminate sensor/detection units , 2007 .

[5] Dwight D. Viehland,et al. Modeling and detection of quasi-static nanotesla magnetic field variations using magnetoelectric laminate sensors , 2007 .

[6] C. Nan,et al. Multiferroic Magnetoelectric Composites: Historical Perspective, Status, and Future Directions , 2008, Progress in Advanced Dielectrics.

[7] Eckhard Quandt,et al. Low damping resonant magnetoelectric sensors , 2010 .

[8] A. Noreika,et al. Dielectric Properties of Reactively Sputtered Films of Aluminum Nitride , 1969 .

[9] Larry K. Baxter,et al. Capacitive Sensors: Design and Applications , 1996 .