Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization

Magneto-optic (MO) imaging is based on Faraday rotation of a linearly polarized incident light beam illuminating a sensitive MO layer placed in close contact to the sample. For in-plane magnetized layers of Lu 3-x Bi x Fe 5-y Ga y O 12 ferrimagnetic garnet films, zig-zag domain formation occurs when...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Moreno, A.J., Ferrari, H.
Formato: JOUR
Materias:
Magneto optic
Neels and Bloch walls
Zig-zag domain walls
Applied magnetic fields
Bloch wall
Domain formation
External magnetic field
Ferrimagnetic garnet film
Field components
In-plane magnetization
Incident light beams
Linearly polarized
Magnetostatic energy
Recorded signals
Zig-zag
Ferrimagnetism
Garnets
Magnetic fields
Magnetization
Magnetooptical effects
Magnetic domains
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3117_Moreno
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09214526_v407_n16_p3117_Moreno
record_format dspace
spelling todo:paper_09214526_v407_n16_p3117_Moreno2023-10-03T15:45:24Z Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization Moreno, A.J. Ferrari, H. Magneto optic Neels and Bloch walls Zig-zag domain walls Applied magnetic fields Bloch wall Domain formation External magnetic field Ferrimagnetic garnet film Field components In-plane magnetization Incident light beams Linearly polarized Magnetostatic energy Recorded signals Zig-zag Ferrimagnetism Garnets Magnetic fields Magnetization 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 placed in close contact to the sample. For in-plane magnetized layers of Lu 3-x Bi x Fe 5-y Ga y O 12 ferrimagnetic garnet films, zig-zag domain formation occurs whenever the sample stray parallel field component changes sign. In this work we study the behavior of zig-zag domain walls that appear when the garnet is placed over samples with in-plane magnetization like audio tapes recorded with different signals. We describe the zig-zag walls considering the anisotropy, exchange and magnetostatic energies in the Neel tails and the contribution of an applied magnetic field. Using different recorded signals we have been able to control the gradient of stray parallel field component on the garnet, changing the distance between domains and the size of zig-zag walls. We could even avoid the appearance of these zig-zag domain walls and obtain closed domains structures. We also study the behavior of the domain walls when an external magnetic field is applied parallel to the sample. © 2012 Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3117_Moreno
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 optic
Neels and Bloch walls
Zig-zag domain walls
Applied magnetic fields
Bloch wall
Domain formation
External magnetic field
Ferrimagnetic garnet film
Field components
In-plane magnetization
Incident light beams
Linearly polarized
Magnetostatic energy
Recorded signals
Zig-zag
Ferrimagnetism
Garnets
Magnetic fields
Magnetization
Magnetooptical effects
Magnetic domains
spellingShingle Magneto optic
Neels and Bloch walls
Zig-zag domain walls
Applied magnetic fields
Bloch wall
Domain formation
External magnetic field
Ferrimagnetic garnet film
Field components
In-plane magnetization
Incident light beams
Linearly polarized
Magnetostatic energy
Recorded signals
Zig-zag
Ferrimagnetism
Garnets
Magnetic fields
Magnetization
Magnetooptical effects
Magnetic domains
Moreno, A.J.
Ferrari, H.
Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
topic_facet Magneto optic
Neels and Bloch walls
Zig-zag domain walls
Applied magnetic fields
Bloch wall
Domain formation
External magnetic field
Ferrimagnetic garnet film
Field components
In-plane magnetization
Incident light beams
Linearly polarized
Magnetostatic energy
Recorded signals
Zig-zag
Ferrimagnetism
Garnets
Magnetic fields
Magnetization
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 placed in close contact to the sample. For in-plane magnetized layers of Lu 3-x Bi x Fe 5-y Ga y O 12 ferrimagnetic garnet films, zig-zag domain formation occurs whenever the sample stray parallel field component changes sign. In this work we study the behavior of zig-zag domain walls that appear when the garnet is placed over samples with in-plane magnetization like audio tapes recorded with different signals. We describe the zig-zag walls considering the anisotropy, exchange and magnetostatic energies in the Neel tails and the contribution of an applied magnetic field. Using different recorded signals we have been able to control the gradient of stray parallel field component on the garnet, changing the distance between domains and the size of zig-zag walls. We could even avoid the appearance of these zig-zag domain walls and obtain closed domains structures. We also study the behavior of the domain walls when an external magnetic field is applied parallel to the sample. © 2012 Elsevier B.V.
format JOUR
author Moreno, A.J.
Ferrari, H.
author_facet Moreno, A.J.
Ferrari, H.
author_sort Moreno, A.J.
title Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
title_short Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
title_full Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
title_fullStr Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
title_full_unstemmed Magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
title_sort magneto-optic study of the behavior of magnetic domains walls in ferrimagnetic garnet films placed over samples with in-plane magnetization
url http://hdl.handle.net/20.500.12110/paper_09214526_v407_n16_p3117_Moreno
work_keys_str_mv AT morenoaj magnetoopticstudyofthebehaviorofmagneticdomainswallsinferrimagneticgarnetfilmsplacedoversampleswithinplanemagnetization
AT ferrarih magnetoopticstudyofthebehaviorofmagneticdomainswallsinferrimagneticgarnetfilmsplacedoversampleswithinplanemagnetization
_version_ 1782026748592914432

Ejemplares similares