10 October 2003 Magneto-optic visualization of magnetic field microdistributions: principles and applications for NDT of smart structures and materials
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Proceedings Volume 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2003); doi: 10.1117/12.517956
Event: Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2002, St. Petersburg, Russian Federation
Abstract
Bi-substituted ferrite garnet (R Bi)3(M FE)5O12 epitaxial films with anomalously high (up to 1.2 deg/μm at RT) specific Faraday rotation provide a unique possibility of magneto-optical imaging of magnetic field microdistributions with a sub-micron resolution close to the diffraction limit. In the present work we give a detailed description of the physical principles and various applications of such films in materials science, microelectronics, magnetic testing and nondestructive evaluation (NDE) of defects in both ferromagnetic and non-ferrous metal components. In the latter case eddy-current excitation is used to reveal flaws, cracks and corrosion. The technique is ideal for not only detailed inspections, but also for rapid scanning over large areas to quickly determine structural condition of the part.
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O. M. Korpusov, R. M. Grechishkin, T. Breczko, M. Yu. Goosev, N. S. Neustroev, "Magneto-optic visualization of magnetic field microdistributions: principles and applications for NDT of smart structures and materials", Proc. SPIE 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (10 October 2003); doi: 10.1117/12.517956; https://doi.org/10.1117/12.517956
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KEYWORDS
Magnetism

Magneto-optics

Nondestructive evaluation

Visualization

Anisotropy

Garnet

Smart materials

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