Non-volatile logic gates based on planar Hall effect in magnetic films with two in-plane easy axes

Lee, Sangyeop; Bac, Seul Ki; Choi, Sang Yong; Lee, Hakjoon; Yoo, Taehee; Lee, Sanghoon; Liu, Xinyu; Dobrowolska, M.; Furdyna, J. K.

doi:10.1038/s41598-017-01219-z

Cited by 4 publications

(2 citation statements)

References 42 publications

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“…Afterwards, these researchers tried to enhance the sensor sensitivity and resolution either by changing the sensor structure [65,93,108] or sensor geometry [108,137]. During these investigations, new sensor application fields have emerged such as current monitoring [137], oil and gas pipeline inspection [44], and non-volatile logic gates functionalization [138]. Recent investigations of PHE sensors have focused on the different sources of noise and thermal stability [94,139], as well as integration with wearable devices [137,140,141].…”

Section: A Brief History Of the Phementioning

confidence: 99%

Current trends in planar Hall effect sensors: evolution, optimization, and applications

Elzwawy

Pişkin

Akdoğan

et al. 2021

J. Phys. D: Appl. Phys.

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The advantages of planar Hall effect (PHE) sensors-their thermal stability, very low detection limits, and high sensitivities-have supported a wide range of advanced applications such as nano-Tesla (nT) magnetometers, current sensing, or low magnetic moment detection in lab-on-a-chip devices. In this review we outline the background and implications of these PHE sensors, starting from fundamental physics through their technological evolution over the past few decades. Key parameters affecting the performance of these sensors, including noise from different sources, thermal stability, and magnetoresistance magnitudes are discussed. The progression of sensor geometries and junctions from disk, cross-to-bridge, ring, and ellipse configuration is also reviewed. The logical sequence of these structures from single magnetoresistive layers to bi-, tri-layers, and spin-valves is also covered. Research contributions to the development of these sensors are highlighted with a focus on microfluidics and flexible sensorics. This review serves as a comprehensive resource for scientists who wish to use PHE for fundamental research or to develop new applications and devices. The conclusions from this report will benefit the development, production, and performance evaluation of PHE-based devices and microfluidics, as well as set the stage for future advances.

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Section: A Brief History Of the Phementioning

confidence: 99%

Current trends in planar Hall effect sensors: evolution, optimization, and applications

Elzwawy

Pişkin

Akdoğan

et al. 2021

J. Phys. D: Appl. Phys.

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“…The switch of the magnetization between the two energy minima is easier at high temperature than the switch at low temperature. 19 Intrinsic rotation of the easy axis from its referenced direction (a) vs temperature is another factor contributing to the temperature variation of f(h) as discussed in Fig. 2(e).…”

mentioning

confidence: 97%

Reduced thermal dependence of the sensitivity of a planar Hall sensor

Mahfoud

Hung²,

Wane³

et al. 2019

Applied Physics Letters

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Advances and key technologies in magnetoresistive sensors with high thermal stabilities and low field detectivities

et al. 2022

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Advances in micro- and nanotechnology have led to rapid employment of spintronic sensors in both recording and non-recording applications. These state-of-the-art magnetoresistive spintronic sensors exhibit high sensitivities and ultra-low field detectivities that meet requirements of smart sensing applications in the fields of internet of things, mobile devices, space technology, aeronautics, magnetic flux leakage, domotics, the environment, and healthcare. Moreover, their ability to be customized and miniaturized, ease of integration, and cost-effective nature make these sensors uniquely competitive with regard to mass production. In this study, we discuss magnetoresistive field sensors based on the planar-Hall effect, which are very promising for their high sensitivity and sensing ultra-low magnetic fields. We provide a detailed historical overview and discuss recent dramatic developments in several application fields. In addition, we discuss sensor material property requirements, design architectures, noise-reduction techniques, and sensing capabilities, along with the high repeatabilities and good flexibility characteristics of such devices. All of these high-performance characteristics apply across a wide temperature range and make the sensor robust when used in various novel applications. The sensor also appears promising because it is cost-effective and can be used in micro-sensing applications. Recently, a noteworthy study that combined integrated planar-Hall magnetoresistive sensors with microfluidic channels revealed their potential for highly localized magnetic field sensing. This characteristic makes them suitable for point-of-care-technologies that require resolutions of a few pT at room temperature.

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Non-volatile logic gates based on planar Hall effect in magnetic films with two in-plane easy axes

Cited by 4 publications

References 42 publications

Current trends in planar Hall effect sensors: evolution, optimization, and applications

Current trends in planar Hall effect sensors: evolution, optimization, and applications

Reduced thermal dependence of the sensitivity of a planar Hall sensor

Advances and key technologies in magnetoresistive sensors with high thermal stabilities and low field detectivities

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