Parametric controls on giant magnetoimpedance (GMI) behaviour of CoFeSiBCr amorphous wires for prospective sensor applications

Das, Tarun Kumar; Mitra, A.; Mandal, Sushil Kumar; Roy, Rajat; Banerji, P.; Panda, Ashis K.

doi:10.1016/j.sna.2014.10.027

Cited by 13 publications

(5 citation statements)

References 33 publications

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“…The sensor nucleus was an amorphous wire with nominal composition Co 66 Fe 12 Si 13 B 15 Cr 4 and a mean diameter of 90 µm obtained by in-rotating water quenching technique [39]. The first step was to determine the optimal conditions leading to the maximum GMI effect.…”

Section: Gmi Magnetic Field Sensormentioning

confidence: 99%

A Combination of a Vibrational Electromagnetic Energy Harvester and a Giant Magnetoimpedance (GMI) Sensor

Beato-López

Royo-Silvestre

Algueta-Miguel

et al. 2020

Sensors

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An energy harvesting device combined with a giant magnetoimpedance (GMI) sensor is presented to analyze low frequency vibrating systems. An electromagnetic harvester based on magnetic levitation is proposed for the electric power generation. The device is composed of two fixed permanent magnets at both ends of a cylindrical frame, a levitating magnet acting as inertial mass and a pick-up coil to collect the induced electromotive force. At the resonance frequency (10 Hz) a maximum electrical power of 1.4 mW at 0.5 g is generated. Moreover, an amorphous wire was employed as sensor nucleus for the design of a linear accelerometer prototype. The sensor is based on the GMI effect where the impedance changes occur as a consequence of the variations of the effective magnetic field due to an oscillating magnetic element. As a result of the magnet’s periodic motion, an amplitude modulated signal (AM) was obtained, its amplitude being proportional to mechanical vibration amplitude (or acceleration). The sensor’s response was examined for a simple ferrite magnet under vibration and compared with that obtained for the vibrational energy harvester. As a result of the small amplitudes of vibration, a linear sensor response was obtained that could be employed in the design of low cost and simple accelerometers.

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Section: Gmi Magnetic Field Sensormentioning

confidence: 99%

A Combination of a Vibrational Electromagnetic Energy Harvester and a Giant Magnetoimpedance (GMI) Sensor

Beato-López

Royo-Silvestre

Algueta-Miguel

et al. 2020

Sensors

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“…Şekil 1. Amorf telin manyetik sensör olarak kullanımı [8,9] Bu çalışmada GMR etki gösteren AC20 (Co0.94Fe0.06)72.5Mo12.5B15) amorf tel ve 500 sarımlı 4,2 mH özindüksiyon katsayılı bir bobin sensör olarak kullanılmıştır. Bu sensörlerin manyetik alanı belirlenebilme mesafesi ve çözünürlüğü arasındaki farklar araştırılmıştır.…”

Section: Marmara Fen Bilimleri Dergisi 20184: 475-489unclassified

“…Telin çevrelediği alanın p.R 2 olduğunu ve N tane sarımdan oluştuğunu düşünürsek manyetik akı yoğunluğu ifadesi; (8) şeklinde yazılabilir. Bu çalışmada manyetik alan kaynağı olarak kullanılan bobin demir çekirdekli olduğundan manyetik akı yoğunluğu hesabı için, (9) bağıntısı kullanılabilir.…”

Section: Manyetik Alan Kaynağıunclassified

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Uzaktan Manyetik Algılamada Manyetik Sensörlerin Hassasiyet Analizi

Çıtak

2018

Marmara Fen Bilimleri Dergisi

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ÖzSon zamanlarda yapılan uzaktan algılama çalışmaları, düşük güç tüketimi, düşük fiyat, çevresel değişimlerden etkilenmeme, yüksek hassasiyet, yüksek güvenilirlik ve sağlamlık üzerinedir. Uzaktan manyetik algılama için kullanılan manyetik sensörler arasında; bobin, GMR, AMR, Fluxgate, Hall ve Squid sensörler yer almaktadır. Sensörün hassasiyeti ile fiyatı arasında ters orantı mevcuttur. Bu yüzden algılama mesafesine göre manyetik sensör ile maliyeti arasında optimum bir orantı kurmak gerekmektedir. Bu çalışmada 1200 sarımlı demir çekirdekli bir bobinin 1 A'lik AC akımda oluşturduğu manyetik alanın, GMR etki gösteren AC20 (Co 0.94 Fe 0.06 ) 72.5 Mo 12.5 B 15 ) amorf tel ve bobin sensörle algılanabilme mesafesi ile birlikte çözünürlüğü arasındaki farkların belirlenmesi hedeflenmiştir. Bu doğrultuda sensörlerin konum kontrollü hareketi için 2D tarayıcı sistem tasarlanıp imal edilmiş ve sensörlerin aynı manyetik alan içindeki performansları makale kapsamında ayrıntılı olarak tartışılmıştır. AbstractThe latest remote sensing studies are on low power consumption, low price, resistance to environmental alterations, high precision, high reliability and durability. Coil, GMR, AMR, Fluxgate, Hall and Squid are among the magnetic sensors that are used for remote magnetic sensing. There is an inverse proportion between precision of a sensor and its price. That's why an optimum proportion is needed between a magnetic sensor and its price depending on sensing distance. In this study, it is aimed to determine the differences between resolution and sensing distance of a magnetic field created by a 1200-turn coil with iron core, using AC20 (Co0.94Fe0.06)72.5Mo12.5B15) amorphous wire and a coil sensor that indicate GMR effect.

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“…Kuzminski et al have improved the GMI effect with various thermal and mechanical treatments [ 6 ]. Das et al have focused on the effect of different driving conditions on the rapidly quenched amorphous wires [ 7 ]. Aktham et al have designed a GMI sensor based on the fully digital excitation, detection, and conditioning circuit [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Operating Point Self-Regulator for Giant Magneto-Impedance Magnetic Sensor

Zhou

Pan

Zhang

2017

Sensors

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The giant magneto-impedance (GMI) magnetic sensor based on the amorphous wire has been believed to be tiny dimensions, high sensitivity, quick response, and small power consumption. This kind of sensor is usually working under a bias magnetic field that is called the sensor’s operating point. However, the changes in direction and intensity of the external magnetic field, or the changes in sensing direction and position of the sensor, will lead to fluctuations in operating point when the sensor is working without any magnetic shield. In this work, a GMI sensor based on the operating point self-regulator is designed to overcome the problem. The regulator is based on the compensated feedback control that can maintain the operating point of a GMI sensor in a uniform position. With the regulator, the GMI sensor exhibits a stable sensitivity regardless of the external magnetic field. In comparison with the former work, the developed operating point regulator can improve the accuracy and stability of the operating point and therefore decrease the noise and disturbances that are introduced into the GMI sensor by the previous self-regulation system.

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Parametric controls on giant magnetoimpedance (GMI) behaviour of CoFeSiBCr amorphous wires for prospective sensor applications

Cited by 13 publications

References 33 publications

A Combination of a Vibrational Electromagnetic Energy Harvester and a Giant Magnetoimpedance (GMI) Sensor

A Combination of a Vibrational Electromagnetic Energy Harvester and a Giant Magnetoimpedance (GMI) Sensor

Uzaktan Manyetik Algılamada Manyetik Sensörlerin Hassasiyet Analizi

Operating Point Self-Regulator for Giant Magneto-Impedance Magnetic Sensor

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