The Development of a High Sensitive Micro Size Magnetic Sensor Named as GSR Sensor Excited by GHz Pulse Current

Honkura, Y.; Honkura, Shinpei

doi:10.23919/piers.2018.8597703

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The block diagram and ASIC of electronic circuit for GSR sensor in Figure 4a is similar to the conventional GMI circuit [25,26,32] but ASIC used in this research has improvements as follows. The pulse generator can generate pulse currents with frequency of 1 GHz to 3 GHz.…”

Section: Methodsmentioning

confidence: 99%

“…They are divided into one axis type with the length of 0.16 mm, 0.45 mm, and 0.99 mm, two axis type, and three axis type. Some prototypes of GSR sensors suitable for specified applications [30,32] are produced by combining with these elements and the ASIC. The properties of these prototypes of GSR sensors are shown in Table 1.…”

Section: Development Of Asic Type Gsr Sensor For Various Applicationsmentioning

confidence: 99%

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The Development of ASIC Type GSR Sensor Driven by GHz Pulse Current

Honkura¹,

Honkura²

2020

Sensors

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The GigaHertz spin rotation (GSR) effect was observed through the excitement of Giga Hertz (GHz) pulse current flowing through amorphous wire. The GSR sensor that was developed provides excellent features that enhanced magnetic sensitivity and sine functional relationship, as well as good linearity, absence of hysteresis, and low noise. Considering the GHz frequency range used for the GSR sensor, we assume that the physical phenomena associated with the operation of the sensor are based on spin reduction and rotation of the magnetization. The proper production technology needed was developed and a micro-sized GSR sensor was produced by directly forming micro coils on the surface of the application-specific integrated circuit (ASIC). Some prototypes of the ASIC type GSR sensor have been produced in consideration of applications such as automotive use, mobile device use, and medical use. Therefore, we can conclude that GSR sensors have great potential to become promising magnetic sensors for many applications.

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Section: Methodsmentioning

confidence: 99%

Section: Development Of Asic Type Gsr Sensor For Various Applicationsmentioning

confidence: 99%

The Development of ASIC Type GSR Sensor Driven by GHz Pulse Current

Honkura¹,

Honkura²

2020

Sensors

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“…Magnetic sensors are used in various automotive, medical, and data-storage applications, and their performance is expected to be improved. The magnetic core of a Gigahertz Spin Rotation (GSR) sensor is composed of amorphous magnetic wire, on which a detection coil is wound [ 1 , 2 , 3 ]. Amorphous magnetic wires are known to have a characteristic magnetic domain structure and have been extensively studied [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors

Takezawa

Harada

Honkura³

et al. 2023

Sensors

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The core of a Gigahertz Spin Rotation (GSR) sensor, a compact and highly sensitive magnetic sensor, is composed of Co–Fe-based amorphous magnetic wire with a diameter of 10 μm. Observations of the magnetic domain structure showed that this magnetic wire has unusual magnetic noise characteristics. Bamboo-shaped magnetic domains a few hundred micrometers in width were observed to form inside the wire, and smaller domains a few micrometers across were observed to form inside these larger domains. The magnetic domain pattern changed abruptly when an external magnetic field was applied to the wire. Herein is shown how these changes may be a source of magnetic noise in the wire.

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The development of a micro-coil-on-ASIC type GSR sensor driven by GHz pulse current

Honkura¹,

Honkura²

2020

Journal of Magnetism and Magnetic Materials

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The Development of a High Sensitive Micro Size Magnetic Sensor Named as GSR Sensor Excited by GHz Pulse Current

Cited by 6 publications

References 4 publications

The Development of ASIC Type GSR Sensor Driven by GHz Pulse Current

The Development of ASIC Type GSR Sensor Driven by GHz Pulse Current

Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors

The development of a micro-coil-on-ASIC type GSR sensor driven by GHz pulse current

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