Artículo
Magnetic behavior of oxide passivated (Fe0.85Nd0.15)0.6B0.4 amorphous nanoparticles
Tortarolo, Marina del Carmen
; Mijovilovich, A.; Macedo, W. A. A.; Zysler, Roberto Daniel
; Ramos, Cinthia Paula
Fecha de publicación:
05/2023
Editorial:
Springer
Revista:
MRS Communications
e-ISSN:
2159-6867
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We report on magnetic amorphous (Fe0.85Nd0.15)0.6B0.4 nanoparticles showing an enhanced thermagnetic stability regarding to their size, with a blocking temperature higher than room temperature. Magnetization and Mössbauer spectroscopy results suggest that the ideally spherical nanoparticles conformation is almost equally distributed between an ordered core and an iron oxide shell (Fe2O3). Magnetization measurements are described by a phenomenological model comprising a ferromagnetic core represented by the Bloch´s law and a magnetically disordered contribution obeying the Curie law. The interaction of the core with the oxide shell would be enough to thermally stabilize the nanoparticles against superparamagnetism.
Palabras clave:
AMORPHOUS
,
MAGNETIC PROPERTIES
,
MÖSSBAUER EFFECT
,
NANOSTRUCTURE
,
RARE EARTHS
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Licencia
Identificadores
Colecciones
Articulos (UE-INN - NODO CONSTITUYENTES)
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO CONSTITUYENTES
Articulos de UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA - NODO CONSTITUYENTES
Citación
Tortarolo, Marina del Carmen; Mijovilovich, A.; Macedo, W. A. A.; Zysler, Roberto Daniel; Ramos, Cinthia Paula; Magnetic behavior of oxide passivated (Fe0.85Nd0.15)0.6B0.4 amorphous nanoparticles; Springer; MRS Communications; 13; 3; 5-2023; 438-444
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