Magneto-optical imaging plate with backlight for quantitative measurement of magnetic field distribution

Nagakubo, Yosuke; Sasaki, Masahide; Meguro, Sakae; Nishikawa, Masami; Ishibashi, Takayuki

doi:10.7567/jjap.57.09tc02

Cited by 6 publications

(1 citation statement)

References 35 publications

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“…By using a Bi2:NIG (neodymium iron garnet) MOIF film and green and yellow LED, a color contrast for the magnetic field with color scales indicating the quantitative values of magnetic fields could be obtained [73]. Large MO imaging plates with an area of 11 × 15 cm 2 were prepared from Bi2.5:NIG on a glass substrate for large-scale imaging [74].…”

Section: Applications Of Moif Techniquementioning

confidence: 99%

Magneto-Optical Indicator Films: Fabrication, Principles of Operation, Calibration, and Applications

Dorosinskiy

Sievers

2023

Sensors

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Magneto-optical indicator films (MOIFs) are a very useful tool for direct studies of the spatial distribution of magnetic fields and the magnetization processes in magnetic materials and industrial devices such as magnetic sensors, microelectronic components, micro-electromechanical systems (MEMS), and others. The ease of application and the possibility for direct quantitative measurements in combination with a straightforward calibration approach make them an indispensable tool for a wide spectrum of magnetic measurements. The basic sensor parameters of MOIFs, such as a high spatial resolution down to below 1 μm combined with a large spatial imaging range of up to several cm and a wide dynamic range from 10 μT to over 100 mT, also foster their application in various areas of scientific research and industry. The history of MOIF development totals approximately 30 years, and only recently have the underlying physics been completely described and detailed calibration approaches been developed. The present review first summarizes the history of MOIF development and applications and then presents the recent advances in MOIF measurement techniques, including the theoretical developments and traceable calibration methods. The latter make MOIFs a quantitative tool capable of measuring the complete vectorial value of a stray field. Furthermore, various scientific and industrial application areas of MOIFs are described in detail.

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Section: Applications Of Moif Techniquementioning

confidence: 99%

Magneto-Optical Indicator Films: Fabrication, Principles of Operation, Calibration, and Applications

Dorosinskiy

Sievers

2023

Sensors

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Magneto-optical property and magnetic anisotropy of (100) oriented R0.5Bi2.5Fe5O12 (R = Eu, Sm, and Pr) thin films prepared by metal–organic decomposition

et al. 2022

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Bi-substituted rare-earth iron garnets, R3− xBi xFe5O12 (Bi:RIG), where R represents one of the rare-earth elements, exhibit the excellent magneto-optical (MO) properties that increase with Bi content x. In addition, magnetic properties of Bi:RIGs, such as the magnetization, the magnetic anisotropy, and the magnetostriction, could be controlled by choosing rare-earth elements. In this paper, we report on R0.5Bi2.5Fe5O12 (Bi2.5:RIG, R = Pr, Sm, and Eu) thin films on Gd3Ga5O12 (GGG) (100) single crystal substrates prepared by the metal–organic decomposition method. XRD analysis reveals that Bi2.5:RIG thin films are grown along the same orientation with GGG substrates, and their lattice constants are dependent on the ionic radii of the rare-earth ions. MO measurements show that Faraday spectra of the Bi2.5:RIG thin films have a typical spectral structure observed for Bi:RIGs. The magnetic anisotropy constants, the uniaxial magnetic anisotropy energy Ku, and the magnetocrystalline anisotropy energy K1 of Bi2.5:RIG (R = Y, Pr, Nd, Sm, and Eu) thin films are investigated by using the ferromagnetic resonance measurement.

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Recent Topics of Magnetic Domain Observation Technique of Nano-scaled Magnetic Materials

Takezawa

2021

IEEJ Trans. FM

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Magneto-optical imaging plate with backlight for quantitative measurement of magnetic field distribution

Cited by 6 publications

References 35 publications

Magneto-Optical Indicator Films: Fabrication, Principles of Operation, Calibration, and Applications

Magneto-Optical Indicator Films: Fabrication, Principles of Operation, Calibration, and Applications

Magneto-optical property and magnetic anisotropy of (100) oriented R0.5Bi2.5Fe5O12 (R = Eu, Sm, and Pr) thin films prepared by metal–organic decomposition

Recent Topics of Magnetic Domain Observation Technique of Nano-scaled Magnetic Materials

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