Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors
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. Ba...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/7/3506 |
| _version_ | 1797607036722085888 |
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| author | Masaaki Takezawa Yuki Harada Yoshinobu Honkura Shinpei Honkura |
| author_facet | Masaaki Takezawa Yuki Harada Yoshinobu Honkura Shinpei Honkura |
| author_sort | Masaaki Takezawa |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-11T05:24:38Z |
| format | Article |
| id | doaj.art-42e48740ab584f7d8075152319600a3f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T05:24:38Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-42e48740ab584f7d8075152319600a3f2023-11-17T17:33:40ZengMDPI AGSensors1424-82202023-03-01237350610.3390/s23073506Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR SensorsMasaaki Takezawa0Yuki Harada1Yoshinobu Honkura2Shinpei Honkura3Kyushu Institute of Technology, Fukuoka 804-0015, JapanKyushu Institute of Technology, Fukuoka 804-0015, JapanMagnedesign Corporation, Nagoya 466-0059, JapanMagnedesign Corporation, Nagoya 466-0059, JapanThe 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.https://www.mdpi.com/1424-8220/23/7/3506magnetic domainsamorphous wiremagnetic sensorGSR sensor |
| spellingShingle | Masaaki Takezawa Yuki Harada Yoshinobu Honkura Shinpei Honkura Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors Sensors magnetic domains amorphous wire magnetic sensor GSR sensor |
| title | Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors |
| title_full | Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors |
| title_fullStr | Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors |
| title_full_unstemmed | Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors |
| title_short | Observation of Magnetic Domains in Amorphous Magnetic Wires with a Diameter of 10 μm Used in GSR Sensors |
| title_sort | observation of magnetic domains in amorphous magnetic wires with a diameter of 10 μm used in gsr sensors |
| topic | magnetic domains amorphous wire magnetic sensor GSR sensor |
| url | https://www.mdpi.com/1424-8220/23/7/3506 |
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