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Preparation and Characterization of Sensitive Magnetic Garnet Films for MOI Applications

  • Magnetic garnet films prepared by liquid phase epitaxy on paramagnetic substrates of gadolinium gallium garnet are currently used for the imaging of magnetic field distributions. This application is based on the Faraday rotation which can be strongly enhanced by bismuth incorporation. For gray scale imaging the plane of the sensor film should be an easy plane of magnetization so that no domains nucleate. However, incorporation of bismuth induces a strong positive uniaxial anisotropy perpendicular to the film plane, especially if films of [111] orientation are used. To counteract this unwanted behavior neodymium and/or praseodymium are substituted in addition to bismuth. These two elements cause a very strong negative anisotropy. This is tested experimentally by growing series of garnet films with gradually changing composition and growth parameters.

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Metadaten
Author:C. Holthaus, Oliver Hagedorn, M. Klank, Mikhail Shamonin (Chamonine)ORCiDGND, A. Trifonov, Horst Dötsch
DOI:https://doi.org/10.1007/978-94-007-1007-8_42
Parent Title (English):Magneto-Optical Imaging. Proceedings of the NATO Advanced Research Workshop on Magneto-Optical Imaging, Øystese, Norway, 28 - 30 August 2003
Publisher:Kluwer
Place of publication:Dodrecht
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2004
Release Date:2022/12/16
Tag:Garnet films; Imaging; Magneto-optics
First Page:329
Last Page:336
Andere Schriftenreihe:NATO Science Series. Series II, Mathematics, physics and chemistry ; 142
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
research focus:Information und Kommunikation
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG