Magneto-optic imaging of domain walls in ferrimagnetic garnet films

Magneto-optic (MO) imaging is based on Faraday rotation of a linearly polarized incident light beam illuminating a sensitive MO layer (MOL) placed in close contact to the sample. For in-plane magnetized layers of Lu3-xBixFe5-yGayO12 ferrimagnetic garnet films, zig-zag domain formation occurs wheneve...

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Detalles Bibliográficos
Autores principales:	Ferrari, Hernán Javier, Bekeris, Victoria Isabel
Publicado:	2007
Materias:	Magneto-optics Zig-zag domain walls Domain structures Garnet films Magnetized layers Magneto-optic imaging Anisotropy Ferroelectric films Imaging techniques Light polarization Magnetic fields Magnetooptical effects Magnetic domains
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v398_n2_p476_Ferrari http://hdl.handle.net/20.500.12110/paper_09214526_v398_n2_p476_Ferrari
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09214526_v398_n2_p476_Ferrari
record_format	dspace
spelling	paper:paper_09214526_v398_n2_p476_Ferrari2023-06-08T15:50:31Z Magneto-optic imaging of domain walls in ferrimagnetic garnet films Ferrari, Hernán Javier Bekeris, Victoria Isabel Magneto-optics Zig-zag domain walls Domain structures Garnet films Magnetized layers Magneto-optic imaging Anisotropy Ferroelectric films Imaging techniques Light polarization Magnetic fields Magnetooptical effects Magnetic domains Magneto-optic (MO) imaging is based on Faraday rotation of a linearly polarized incident light beam illuminating a sensitive MO layer (MOL) placed in close contact to the sample. For in-plane magnetized layers of Lu3-xBixFe5-yGayO12 ferrimagnetic garnet films, zig-zag domain formation occurs whenever the sample stray parallel field component, H∥, changes sign. Considering the anisotropy, exchange and magnetostatic energies in the Néel tails, and the contribution of an applied magnetic field, it is possible to describe the zig-zag walls that separate domains with opposite in-plane magnetization. The size of the walls decreases with the spatial derivative of H∥. We studied the evolution of these domains as we steadily forced the change in sign of H∥ to shorter length scales, from hundreds to a few microns. We describe the samples used to control the change in sign of H∥ at the MOL plane, and we analyze the images that evolve from zig-zag walls to much more complex closed domain structures. © 2007 Elsevier B.V. All rights reserved. Fil:Ferrari, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v398_n2_p476_Ferrari http://hdl.handle.net/20.500.12110/paper_09214526_v398_n2_p476_Ferrari
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Magneto-optics Zig-zag domain walls Domain structures Garnet films Magnetized layers Magneto-optic imaging Anisotropy Ferroelectric films Imaging techniques Light polarization Magnetic fields Magnetooptical effects Magnetic domains
spellingShingle	Magneto-optics Zig-zag domain walls Domain structures Garnet films Magnetized layers Magneto-optic imaging Anisotropy Ferroelectric films Imaging techniques Light polarization Magnetic fields Magnetooptical effects Magnetic domains Ferrari, Hernán Javier Bekeris, Victoria Isabel Magneto-optic imaging of domain walls in ferrimagnetic garnet films
topic_facet	Magneto-optics Zig-zag domain walls Domain structures Garnet films Magnetized layers Magneto-optic imaging Anisotropy Ferroelectric films Imaging techniques Light polarization Magnetic fields Magnetooptical effects Magnetic domains
description	Magneto-optic (MO) imaging is based on Faraday rotation of a linearly polarized incident light beam illuminating a sensitive MO layer (MOL) placed in close contact to the sample. For in-plane magnetized layers of Lu3-xBixFe5-yGayO12 ferrimagnetic garnet films, zig-zag domain formation occurs whenever the sample stray parallel field component, H∥, changes sign. Considering the anisotropy, exchange and magnetostatic energies in the Néel tails, and the contribution of an applied magnetic field, it is possible to describe the zig-zag walls that separate domains with opposite in-plane magnetization. The size of the walls decreases with the spatial derivative of H∥. We studied the evolution of these domains as we steadily forced the change in sign of H∥ to shorter length scales, from hundreds to a few microns. We describe the samples used to control the change in sign of H∥ at the MOL plane, and we analyze the images that evolve from zig-zag walls to much more complex closed domain structures. © 2007 Elsevier B.V. All rights reserved.
author	Ferrari, Hernán Javier Bekeris, Victoria Isabel
author_facet	Ferrari, Hernán Javier Bekeris, Victoria Isabel
author_sort	Ferrari, Hernán Javier
title	Magneto-optic imaging of domain walls in ferrimagnetic garnet films
title_short	Magneto-optic imaging of domain walls in ferrimagnetic garnet films
title_full	Magneto-optic imaging of domain walls in ferrimagnetic garnet films
title_fullStr	Magneto-optic imaging of domain walls in ferrimagnetic garnet films
title_full_unstemmed	Magneto-optic imaging of domain walls in ferrimagnetic garnet films
title_sort	magneto-optic imaging of domain walls in ferrimagnetic garnet films
publishDate	2007
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v398_n2_p476_Ferrari http://hdl.handle.net/20.500.12110/paper_09214526_v398_n2_p476_Ferrari
work_keys_str_mv	AT ferrarihernanjavier magnetoopticimagingofdomainwallsinferrimagneticgarnetfilms AT bekerisvictoriaisabel magnetoopticimagingofdomainwallsinferrimagneticgarnetfilms
_version_	1768544692220198912

Magneto-optic imaging of domain walls in ferrimagnetic garnet films

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