Visualization of stray-field distribution by charged domain-walls in rare-earth substituted iron garnets

Napolitano, A.; Ragusa, C.; Guastella, S.; Musumeci, S.; Rivolo, P.; Laviano, Francesco

doi:10.1016/j.jmmm.2020.166556

Magnetic-optical methods are used to investigate the magnetic microstructure of an epitaxial film of (Lu,Bi) substituted rare earth iron garnet. In particular, we focused our study on a bi-dimensional domain configuration, the Néel spike, which is induced and pinned at defects inside the sample or at its edges. Imaging of magnetic domains and domain-walls is obtained by direct magneto-optical interaction in the sample under study. The visualization of the stray-field distribution that is generated by single domain-walls is achieved by means of magneto-optical imaging with an indicator film. Furthermore, magnetostatic calculations were per- formed in order to correlate the net magnetic charge of the Néel spike domain and domain-walls with the measured stray-field. It results that the measured magnetic field intensity nearby the Néel spike tip is compatible with a Bloch-to-Néel wall transition.

Visualization of stray-field distribution by charged domain-walls in rare-earth substituted iron garnets / Napolitano, A.; Ragusa, C.; Guastella, S.; Musumeci, S.; Rivolo, P.; Laviano, Francesco. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - STAMPA. - 504(2020), p. 166556.

Titolo:	Visualization of stray-field distribution by charged domain-walls in rare-earth substituted iron garnets
Autori:	NAPOLITANO, ANDREA RAGUSA, CARLO STEFANO GUASTELLA, SALVATORE ANTONIO MUSUMECI, SALVATORE RIVOLO, PAOLA LAVIANO, FRANCESCO
Data di pubblicazione:	2020
Rivista:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Digital Object Identifier (DOI):	http://dx.doi.org/10.1016/j.jmmm.2020.166556
Appare nelle tipologie:	1.1 Articolo in rivista

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