Magneto-Spectroscopy of Semiconductors

Miura, N.

doi:10.1016/b978-0-44-453153-7.00085-7

Cited by 5 publications

(2 citation statements)

References 303 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…FR spectroscopy approach was widely known as a very susceptible and selective technique in investigating the spectroscopic paramagnetic molecules such as nitrogen dioxide, oxygen, and hydroxyl radicals [15]. In general, the FR effect was explained as a phenomenon when a polarized light propagates through a magnetic medium in a parallel direction with the applied magnetic fields, whereby causes the polarization plane rotating by an angle (𝜃𝐹) in proportion to the magnetic field (𝐵), sample thickness (𝑑), and the strength coefficient of the Faraday effect in a particular material called Verdet constant (V), as explained by Equation 1 [16].…”

Section: Magneto-optical Faraday Effect (Moe)mentioning

confidence: 99%

“…MOE inspects the magnetic flux density by flashing a polarized white light through the MO sensor and rotating the light plane based on FRE. This phenomenon can be described mathematically by Equations 2 and 3, where I0 is the light intensity, 𝛼0 is the angle between polarizer and analyzer, H is the intensity of magnetic field, Hs is the magnetic saturation of MO sensor, and E is the electric field transmitted to the analyzer [16]- [18].…”

Section: Magneto-optical Faraday Effect (Moe)mentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Magneto-Optical Faraday Effect Method and Magnetic Camera for Imaging the 2-D Static Leakage Magnetic Flux Density

Dharmawan¹,

Lee²,

Wang³

2022

eJNDT

View full text Add to dashboard Cite

Magnetic flux leaks around the defect on the magnetized ferromagnetic specimen. The magnetic flux leakage testing (MFLT) use the magnetic sensor to measure the leaked magnetic flux density (LMFD). The high sensitivity of sensor need to increase the probability of detection (POD). Also the small size and high spatial resolution of sensor need to increase POD and to sizing defect. Uniform and small lift-off are another necessary to increase POD and sizing ability. Also, the real time imaging of magnetic flux density can increase the inspection time. So the period of planned preventive maintenance could reduce. Two dimensional semiconductor-based magnetic sensor array with high spatial resolution satisfies these requirements. Projection of magnetic flux density on a sensor itself would be another method. We compare the magnetic camera and the magneto-optical Faraday effect (MOE) for MFLT. Magnetic camera uses the two dimensional Hall sensor arrays to imaging the LMFD. And the MOE project LMFD. The plane of polarized light rotates inside of magneto-optical film (MOF). The Faraday rotation angle proportional to direction and intensity of magnetic flux density. Sensitivity, spatial resolution, magnetic hysteresis, repeatability, full-scaled operational range compared. Also shape of target specimen compares too.

show abstract

Section: Magneto-optical Faraday Effect (Moe)mentioning

confidence: 99%

Section: Magneto-optical Faraday Effect (Moe)mentioning

confidence: 99%