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Feasibility of magneto-optic flaw visualization using thin garnet films

  • We investigate the feasibility of using rare-earth iron garnet films grown on (111)-oriented substrates as magneto-optic indicator films for the visualization of magnetic leakage fields in non-destructive evaluation. In most cases the leakage field of the defect has a strong component in the film plane. The influence of this in-plane dc magnetic field on the image formation is investigated. It is shown that the presence of a strong in-plane magnetic field allows one to extend the dynamic range of the out-of-plane field imposed by the uniaxial anisotropy field HA. On the other hand, an in-plane field reduces the sensitivity. The guidelines for selecting parameters of magneto-optic indicator films are given.

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Metadaten
Author:Mikhail Shamonin (Chamonine)ORCiDGND, T. Beuker, P. Rosen, M. Klank, Oliver Hagedorn, Horst Dötsch
DOI:https://doi.org/10.1016/s0963-8695(00)00028-1
Parent Title (English):NDT & E International
Publisher:Elsevier
Document Type:Article
Language:English
Year of first Publication:2000
Release Date:2023/03/30
Tag:Flaw visualization; Garnet films; Imaging; Magnetic flux leakage; Magneto-optics
Volume:33
Issue:8
First Page:547
Last Page:553
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Information und Kommunikation
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG