Research progress in anisotropic magnetoresistance

Zhao, Chongjun; Ding, Lei; Huangfu, Jiashun; Zhang, Jingyan; Yu, Guo

doi:10.1007/s12598-013-0090-5

Cited by 38 publications

(19 citation statements)

References 89 publications

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“…Sulaev et al. observed a large in‐plane AMR (9%) in BSTS nanoflakes, where the AMR value was larger than those of FMs . A higher in‐plane AMR ratio up to ≈68% was even observed in the Dirac semimetal Cd 3 As 2 , which may be induced by the Berry curvature of the band structure…”

Section: Amr In Topological Materialsmentioning

confidence: 97%

“…In the AMR effect, the resistance relies on the angles between the current and magnetization direction. In‐plane AMR is observed in ferromagnets, which is widely used in magnetic sensors nowadays . The origin of AMR in ferromagnets is the spin‐dependent scattering anisotropy.…”

Section: Amr In Topological Materialsmentioning

confidence: 99%

“…The origin of AMR in ferromagnets is the spin‐dependent scattering anisotropy. Usually, the AMR in ferromagnets is less than 1% or a few percent . The AMR is usually defined as ( R | | − R ⊥ )/ R ⊥ × 100%.…”

Section: Amr In Topological Materialsmentioning

confidence: 99%

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Layered Topological Insulators and Semimetals for Magnetoresistance Type Sensors

et al. 2018

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Magnetoresistance (MR) type sensors are transducers that can vary their resistances sensitively in response to an applied magnetic field. Recently, topological quantum materials have drawn the increased attention for sensor applications due to their novel MR effects. Here, a range of MR effects occurring in the layered 3D topological insulators and topological semimetals are briefly reviewed. The MR effects include the extremely large nonsaturating MR, the giant anisotropic MR, and the unique spin‐valve‐like MR. The large MR ratios, the high MR anisotropy, and the low 1/f noise allow sensors to have the high sensitivity over a wide range of temperatures and magnetic fields. It is anticipated that the layered topological quantum materials with their excellent MR performance and structural flexibility would provide an ideal platform for new‐generation magnetic sensor applications.

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Section: Amr In Topological Materialsmentioning

confidence: 97%

Section: Amr In Topological Materialsmentioning

confidence: 99%

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Layered Topological Insulators and Semimetals for Magnetoresistance Type Sensors

et al. 2018

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“…Due to the electron spin orbit coupling and the low symmetry of the potential scattering center, the symmetry of the electron wave function is reduced, which leads to the anisotropy of the electron scattering. This distinguishes it from other MR effects that depend on the injection and detection of spin‐polarized electrons 34 . AMR sensor has the advantages of small volume, simple process, low cost, low impedance, high reliability, and strong resistance to harsh environment.…”

Section: Classification Of Magnetic Sensorsmentioning

confidence: 99%

The progress of magnetic sensor applied in biomedicine: A review of non‐invasive techniques and sensors

Cheng

Alhalili

et al. 2020

J Chinese Chemical Soc

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With the rapid development of sensing technology, it has attracted tremendous interests in the field of biomedicine because of its good biocompatibility, reliability, and safety. In comparison to other sensors, magnetic sensor has a broad application prospect in biomedical field due to its high sensitivity, small size, and intriguing non‐invasive detection property. The purpose of this review is to discuss the applications of magnetic sensors in the biomedical field. First, some widely used magnetic sensors are reviewed based on their working principle and characteristics. Then, the applications of magnetic sensors in biomedical field are introduced from the aspects of magnetic label‐based bioassays, detection of biological movement, and biology magnetism. Finally, the future development direction and prospect of magnetic sensors in biomedical field are prospected. This review will provide a general outlook for the applications of magnetic sensors in biomedicine.

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“…The current flowing through the Hall sensor creates a perpendicular Hall voltage, which is proportional to the measured current and detectable through the material of the sensor. Weak magnetic fields can be measured by various techniques, such as superconducting quantum interference (SQUID) devices [4] or magnetoresistance sensors ("giant", "anomalous", or "tunneling", respectively denoted GMR, AMR, or TMR) [5,6,7]. Hall sensors are also cheap, so are used in many devices.…”

Section: Introductionmentioning

confidence: 99%