Indium Tin Oxide Non-Magnetic Heating Film for Miniaturized SERF Gradient Magnetometer

Liu, Zhi; Zhang, Chen; Yuan, Hui; Yin, Kaifeng; Yang, Yang; Yan, Yeguang; Wang, Yaxiang; Zhou, Binquan; Ning, Xiaolin; Han, Bangcheng

doi:10.1109/jsen.2021.3076133

Cited by 14 publications

(5 citation statements)

References 26 publications

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“…[85] For SERF atomic magnetometers, although they show advantages in miniaturization and independence from cryogenic liquids, more efforts should be devoted to sensitivity improvement, magnetic shielding, and chip-scale design. The sensitivity can be further improved by a uniform field coil to reduce magnetic noise, [162] nonmagnetic electric heating chip to obtain a more uniform temperature field, [163,164] and closed-loop control to correct cross-talks with adjacent sensors. [88,165] Magnetic shields with high performance and low cost should be developed for the multichannel systems deployment by optimizing passive magnetic shield, [166,167] dynamically active shielding, [111] and digital interference suppression methods.…”

Section: Conclusion and Future Perspectivementioning

confidence: 99%

Quantum‐Based Magnetic Field Sensors for Biosensing

Bao

Wang

et al. 2023

Adv Quantum Tech

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The accurate detection of very weak biomagnetic signals with a sensitivity of fT levels and mapping nanoscale magnetic field variations are two of the most significant challenges for biosensing. Compared to the limited sensitivity and spatial resolution of traditional magnetic field sensors, quantum‐based magnetic field sensors are emerging as a promising solution. In this review, the latest developments of three representative quantum‐based magnetic field sensors, including superconducting quantum interference device (SQUID) magnetometers, spin exchange relaxation free (SERF) atomic magnetometers, and nitrogen‐vacancy centers in diamond, are summarized. Both virtues and limitations of these sensors are analyzed systematically, and typical applications in magnetocardiography, magnetoencephalography, detection of neuronal action potentials, magnetic imaging of living cells, biomedical diagnosis, etc., are presented. Furthermore, SQUIDs combined with microfluidics for magnetic immunoassay diagnostics, the chip‐scale SERF atomic magnetometers fabricated by microelectromechanical systems that offer wearable flexibility, and nanodiamonds functionalized with magnetic nanoparticles to improve the sensitivity of nanothermometers are discussed.

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Section: Conclusion and Future Perspectivementioning

confidence: 99%

Quantum‐Based Magnetic Field Sensors for Biosensing

Bao

Wang

et al. 2023

Adv Quantum Tech

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“…[12][13][14][15], which in turn affect the residual magnetic field inside the magnetic shielding device. For ultra-high sensitivity SERF atomic magnetometers, in order to achieve the atomic spin effect, the internal air chamber needs to be heated to a temperature of 150 • C [16,17]. Although some thermal insulation measures have been taken, the temperature of the inner magnetic shielding device will still be higher than room temperature.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Analysis of Magnetic Properties of Permalloy for Magnetic Shielding Devices under Different Temperature Environments

Sun

Ren

et al. 2023

Materials

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The relative permeability, coercivity, and remanence of permalloy are closely related to the performance of magnetic shielding devices. In this paper, the relationship between the magnetic properties of permalloy and the working temperature of magnetic shielding devices is measured. Firstly, the measurement method of permalloy properties based on the simulated impact method is analyzed. What is more, a magnetic property test system consisting of a soft magnetic material tester and a high–low temperature chamber for permalloy ring samples at different temperatures was established to measure DC and AC (0.01 Hz to 1 kHz) magnetic properties at different temperatures (−60 °C to 140 °C). Finally, the results show that compared with room temperature (25 °C), the initial permeability (μi) decreases by 69.64% at −60 °C and increases by 38.23% at 140 °C, and the coercivity (hc) decreases by 34.81% at −60 °C and increases by 8.93% at 140 °C, which are the key parameters in the magnetic shielding device. It can be concluded that the relative permeability and remanence of permalloy are positively correlated with temperature, while the saturation magnetic flux density and coercivity are negatively correlated with temperature. This paper is of great significance to the magnetic analysis and design of magnetic shielding devices.

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“…Generally, in order to achieve the SERF state, it is necessary to increase the atomic spin exchange rate by increasing the vapor density (working temperature) of alkali metals; at the same time, it is necessary to reduce the residual MF to reduce the Lamar precession rate. Therefore, the atomic air chamber inside the magnetic shielding device needs to be heated to 150 • C (the saturated steam temperature of Rubidium) [12,13]. Although there will be corresponding insulation measures, the temperature of the magnetic shielding device will still be increased.…”

Section: Introductionmentioning

confidence: 99%

Measurement and analysis of an optimized Jiles–Atherton model considering the influence of temperature applied in magnetic shielding devices

Sun

Ren

Zhou

2023

J. Phys. D: Appl. Phys.

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The magnetic shielding devices works at different temperatures due to the influence of gas chamber and environmental temperature in the application of ultra-highly sensitive spin exchange relaxation free (SERF) magnetometer. To accurately evaluate the residual magnetic field of magnetic shielding device at different temperatures, it is necessary to build the magnetization model considering temperature. However, the modelling of permalloy’s magnetization properties and the measurement of residual magnetic field in magnetic shielding devices at different temperatures haven’t been considered. In this paper, the optimized Jiles-Atherton model of permalloy considering temperature is constructed in which parameters are extracted by particle swarm optimization algorithm. To further verify the effectiveness of the model in the magnetic shielding device, it is applied to the residual magnetic field simulation of magnetic shielding devices and verified by measurement. The optimized Jiles-Atherton model considering temperature improves the calculation accuracy of magnetic shielding devices, which is of great significance for the application of ultra-highly sensitive SERF magnetometers.

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Indium Tin Oxide Non-Magnetic Heating Film for Miniaturized SERF Gradient Magnetometer

Cited by 14 publications

References 26 publications

Quantum‐Based Magnetic Field Sensors for Biosensing

Quantum‐Based Magnetic Field Sensors for Biosensing

Measurement and Analysis of Magnetic Properties of Permalloy for Magnetic Shielding Devices under Different Temperature Environments

Measurement and analysis of an optimized Jiles–Atherton model considering the influence of temperature applied in magnetic shielding devices

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