Observation of the magnetic properties according to changes in the shape of thin-film giant magnetoimpedance sensor

Jaewon Shin; Yasuyuki Miwa; Sung Hoon Kim; Shuichiro Hashi; Kazushi Ishiyama

doi:10.1109/TMAG.2014.2326866

Observation of the magnetic properties according to changes in the shape of thin-film giant magnetoimpedance sensor

Jaewon Shin, Yasuyuki Miwa, Sung Hoon Kim, Shuichiro Hashi, Kazushi Ishiyama

RIEC - Human and Bio Information Systems Division

Tohoku University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The thin-film type giant magnetoimpedance (GMI) sensor has generated substantial interest owing to its advantages, including ease of integration and greater potential for size reduction. Controlling the magnetic anisotropy is a requirement for developing the high-sensitivity GMI sensor. In this paper, we examined the influence of various sensor geometries on magnetic anisotropy, while also considering the demagnetizing factor. Transverse magnetic anisotropies were induced in all sizes of the sample. The induced magnetic anisotropies were well defined along the transverse direction, with only a little closure domain. The induced magnetic anisotropy was dependent on the width of the sensor and it was sensitively rotated according to the increase in the width of the sensor.

Original language	English
Article number	6971621
Journal	IEEE Transactions on Magnetics
Volume	50
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2014.2326866
Publication status	Published - 2014 Nov 1

Keywords

Demagnetizing field
magnetic anisotropy
magnetic domain
magnetoimpedance
thin film

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10.1109/TMAG.2014.2326866

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abstract = "The thin-film type giant magnetoimpedance (GMI) sensor has generated substantial interest owing to its advantages, including ease of integration and greater potential for size reduction. Controlling the magnetic anisotropy is a requirement for developing the high-sensitivity GMI sensor. In this paper, we examined the influence of various sensor geometries on magnetic anisotropy, while also considering the demagnetizing factor. Transverse magnetic anisotropies were induced in all sizes of the sample. The induced magnetic anisotropies were well defined along the transverse direction, with only a little closure domain. The induced magnetic anisotropy was dependent on the width of the sensor and it was sensitively rotated according to the increase in the width of the sensor.",

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AU - Ishiyama, Kazushi

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AB - The thin-film type giant magnetoimpedance (GMI) sensor has generated substantial interest owing to its advantages, including ease of integration and greater potential for size reduction. Controlling the magnetic anisotropy is a requirement for developing the high-sensitivity GMI sensor. In this paper, we examined the influence of various sensor geometries on magnetic anisotropy, while also considering the demagnetizing factor. Transverse magnetic anisotropies were induced in all sizes of the sample. The induced magnetic anisotropies were well defined along the transverse direction, with only a little closure domain. The induced magnetic anisotropy was dependent on the width of the sensor and it was sensitively rotated according to the increase in the width of the sensor.

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Observation of the magnetic properties according to changes in the shape of thin-film giant magnetoimpedance sensor

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