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dc.contributor.author
Ferrari, Hernan Javier  
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Bekeris, Victoria Isabel  
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Thibeault, M.  
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Johansen, T. H.  
dc.date.available
2019-03-01T21:18:44Z  
dc.date.issued
2007-06  
dc.identifier.citation
Ferrari, Hernan Javier; Bekeris, Victoria Isabel; Thibeault, M.; Johansen, T. H.; Magneto-optic imaging: Normal and parallel field components of in-plane magnetized samples; Elsevier Science; Journal of Magnetism and Magnetic Materials; 313; 1; 6-2007; 98-106  
dc.identifier.issn
0304-8853  
dc.identifier.uri
http://hdl.handle.net/11336/71045  
dc.description.abstract
Magneto-optical (MO) imaging has become a powerful tool for determining magnetic properties of materials by detecting the stray magnetic fields. The technique consists in measuring the Faraday rotation, θF, in the light polarization plane when light travels through a transparent sensitive garnet (ferrite garnet film, FGF) placed in close contact to the sample. For in-plane magnetized samples, the MO image is not trivially related to the sample magnetization, and to contribute to this understanding we have imaged commercial audio tapes in which computer-generated functions were recorded. We present MO images of periodically in-plane magnetized tapes with square, sawtooth, triangular and sinusoidal waveforms, for which we analytically calculate the perpendicular and parallel stray magnetic field components generated by the tape. As a first approach we correlate the measured light intensity with the perpendicular magnetic field component at the FGF, and we show that it can be approximated to the gradient of the sample magnetization. A more detailed calculation, taking into account the effect of both field components in the Faraday rotation, is presented and satisfactorily compared with the obtained MO images. The presence of magnetic domains in the garnet is shown to be related to the change in sign of the parallel component of the stray magnetic field, which can be approximated to the second derivative of the sample magnetization.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
IN-PLANE  
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INDICATOR MAGNETIC DOMAIN  
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MAGNETO-OPTICS  
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OUT OF PLANE MAGNETIZATION  
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Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Magneto-optic imaging: Normal and parallel field components of in-plane magnetized samples  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-02-12T17:26:40Z  
dc.journal.volume
313  
dc.journal.number
1  
dc.journal.pagination
98-106  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Ferrari, Hernan Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina  
dc.description.fil
Fil: Bekeris, Victoria Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina  
dc.description.fil
Fil: Thibeault, M.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina  
dc.description.fil
Fil: Johansen, T. H.. University of Oslo; Noruega  
dc.journal.title
Journal of Magnetism and Magnetic Materials  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jmmm.2006.12.013  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304885306026254