New high-sensitivity hybrid magnetostrictive/electroactive magnetic field sensors

2003 ◽  
Author(s):  
Jiankang Huang ◽  
Robert C. O'Handley ◽  
David Bono
Keyword(s):  
Magnetic Field ◽  
High Sensitivity ◽  
Magnetic Field Sensors

scholarly journals Magnetic Communication Using High-Sensitivity Magnetic Field Detectors

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3415 ◽  
Author(s):  
Maurice Hott ◽  
Peter A. Hoeher ◽  
Sebastian F. Reinecke
Keyword(s):  
Magnetic Field ◽  
Mobile Applications ◽  
Data Communication ◽  
High Sensitivity ◽  
Magnetic Data ◽  
Receiver Coil ◽  
Magnetic Field Sensors ◽  
Resistive Sensor ◽  
Field Sensor ◽  
Multiple Detectors

In this article, an innovative approach for magnetic data communication is presented. For this purpose, the receiver coil of a conventional magneto-inductive communication system is replaced by a high-sensitivity wideband magnetic field sensor. The results show decisive advantages offered by sensitive magnetic field sensors, including a higher communication range for small receiver units. This approach supports numerous mobile applications where receiver size is limited, possibly in conjunction with multiple detectors. Numerical results are supported by a prototype implementation employing an anisotropic magneto-resistive sensor.

scholarly journals Magnetoelectric Magnetic Field Sensors: A Review

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6232
Author(s):  
Mirza Bichurin ◽  
Roman Petrov ◽  
Oleg Sokolov ◽  
Viktor Leontiev ◽  
Viktor Kuts ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Lithium Niobate ◽  
Electric Fields ◽  
Quantum Interference ◽  
High Sensitivity ◽  
Electric Polarization ◽  
New Materials ◽  
Magnetic Field Sensors ◽  
Superconducting Quantum Interference Devices ◽  
Superconducting Quantum Interference

One of the new materials that have recently attracted wide attention of researchers are magnetoelectric (ME) composites. Great interest in these materials is due to their properties associated with the transformation of electric polarization/magnetization under the influence of external magnetic/electric fields and the possibility of their use to create new devices. In the proposed review, ME magnetic field sensors based on the widely used structures Terfenol—PZT/PMN-PT, Metglas—PZT/PMN-PT, and Metglas—Lithium niobate, among others, are considered as the first applications of the ME effect in technology. Estimates of the parameters of ME sensors are given, and comparative characteristics of magnetic field sensors are presented. Taking into account the high sensitivity of ME magnetic field sensors, comparable to superconducting quantum interference devices (SQUIDs), we discuss the areas of their application.

Micro-structured optical fiber magnetic field sensor based on magnetic fluid filling

2019 ◽  
Vol 33 (31) ◽  
pp. 1950380
Author(s):  
Jie Wang ◽  
Zhen Zhang ◽  
Shuguang Li ◽  
Shun Wang
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
High Sensitivity ◽  
Magnetic Field Sensor ◽  
The Finite Element Method ◽  
Average Sensitivity ◽  
Magnetic Field Sensors ◽  
Hole Radius ◽  
Field Sensor ◽  
Air Hole

A novel micro-structured fiber magnetic field sensor based on magnetic fluid (MF) filling is proposed. The air hole radius in the cladding of fiber is reduced from inner layer to outer layer, and the numerical analysis is performed by the finite element method (FEM). For the [Formula: see text]-pol mode, the proposed sensor has an average sensitivity of 960.61 pm/Oe, and for the [Formula: see text]-pol mode, the average sensitivity can reach 884.85 pm/Oe. The sensor has the advantages of small size and high sensitivity and is competitive in magnetic field sensors.

scholarly journals Fiberized Diamond-Based Vector Magnetometers

2021 ◽  
Vol 2 ◽  
Author(s):  
Georgios Chatzidrosos ◽  
Joseph Shaji Rebeirro ◽  
Huijie Zheng ◽  
Muhib Omar ◽  
Andreas Brenneis ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Sensitivity ◽  
Field Vector ◽  
Nitrogen Vacancy ◽  
Double Quantum ◽  
Optical Fibres ◽  
Vector Magnetic Field ◽  
Magnetic Field Sensors ◽  
Halbach Array ◽  
Quantum Transitions

We present two fiberized vector magnetic-field sensors, based on nitrogen-vacancy (NV) centers in diamond. The sensors feature sub-nT/Hz magnetic sensitivity. We use commercially available components to construct sensors with a small sensor size, high photon collection, and minimal sensor-sample distance. Both sensors are located at the end of optical fibres with the sensor-head freely accessible and robust under movement. These features make them ideal for mapping magnetic fields with high sensitivity and spatial resolution (≤ mm). As a demonstration we use one of the sensors to map the vector magnetic field inside the bore of a ≥100 mT Halbach array. The vector field sensing protocol translates microwave spectroscopy data addressing all diamonds axes and including double quantum transitions to a 3D magnetic field vector.

scholarly journals Application of magnetoelectric sensors in biomedicine

2021 ◽  
Vol 2052 (1) ◽  
pp. 012022
Author(s):  
V S Leontiev ◽  
V N Lobekin ◽  
A F Saplev ◽  
E A Zueva ◽  
E E Ivasheva ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Human Body ◽  
Magnetoelectric Effect ◽  
High Sensitivity ◽  
Ease Of Use ◽  
Magnetic Noise ◽  
Magnetic Field Sensors ◽  
Non Invasive ◽  
Highly Sensitive ◽  
Magnetoelectric Sensors

Abstract The prospects of applying highly sensitive magnetic field sensors based on the magnetoelectric effect in biomedicine are discussed in this paper. When developing highly sensitive magnetic field sensors, it is necessary to take into account the magnitude of the equivalent magnetic noise, as well as the mass and size dimensions and ease of use of the system that the sensor is included in. One of the most relevant areas discussed in the article is the application of magnetoelectric magnetic field sensors for magnetocardiography, magnetoencephalography, etc. These methods are non-invasive, have high sensitivity and are easy to use. They also have wide opportunities in detecting weak biomagnetic signals when examining the state of the human body and providing the necessary assistance.

Amorphous Magnetoelastic Materials

1994 ◽  
Vol 360 ◽  
Author(s):  
H. T. Savage ◽  
Marilyn Wun-Fogle
Keyword(s):  
Magnetic Field ◽  
Melt Spinning ◽  
High Sensitivity ◽  
Low Noise ◽  
Tactile Sensors ◽  
Magnetic Anisotropy Energy ◽  
Magnetic Field Sensors ◽  
Crystalline Materials ◽  
Magnetoelastic Materials ◽  
Very High

AbstractThe outstanding feature of amorphous magnetoelastic alloys is the controllability of the magnetic anisotropy energy, Curie point, magnetostriction and magnetic moment. This control of material characteristics, achieved by magnetic and stress annealing plus changes incomposition, is impossible in crystalline materials. The control allows the design of tactile and magnetic field sensors with special features and very high sensitivity. The materials discussed are prepared by rapid solidification through melt spinning in ribbon and wire geometries and magnetron sputtering onto substrates. As an example of the advantagesof sputtered material, an accelerometer on silicon micro-cantilevers is shown. I-t has nocoils. The basic magnetoelastic theory that governs tactile sensors is shown. Low-noise magnetic field sensors with novel twist anisotropies and Barkhausen instabilities in wiresare discussed.

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