Determination of the blocking temperature of magnetic nanoparticles: The good, the bad, and the ugly
Bruvera, I.J. ; Mendoza Zélis, P. ; Calatayud, M.P. ; Goya, G.F. (Universidad de Zaragoza) ; Sánchez, F.H.
Resumen: A numerically solved two-level Stoner-Wohlfarth model with thermal agitation is used to simulate Zero Field Cooling (ZFC)-Field Cooling (FC) curves of monosize and polysize samples and to determine the best method for obtaining a representative blocking temperature TB value of polysize samples. The results confirm a technique based on the T derivative of the difference between ZFC and FC curves proposed by Micha et al. (the good) and demonstrate its relation with two alternative methods: the ZFC maximum (the bad) and the inflection point (the ugly). The derivative method is then applied to experimental data, obtaining the TB distribution of a polysize Fe3O4 nanoparticle sample suspended in hexane with an excellent agreement with TEM characterization.
Idioma: Inglés
DOI: 10.1063/1.4935484
Año: 2015
Publicado en: Journal of Applied Physics 118, 18 (2015), 400382
ISSN: 0021-8979
Factor impacto JCR: 2.101 (2015)
Categ. JCR: PHYSICS, APPLIED rank: 47 / 145 = 0.324 (2015) - Q2 - T1
Factor impacto SCIMAGO: 0.821 - Physics and Astronomy (miscellaneous) (Q2)
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
Exportado de SIDERAL (2021-01-21-10:45:48)
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Idioma: Inglés
DOI: 10.1063/1.4935484
Año: 2015
Publicado en: Journal of Applied Physics 118, 18 (2015), 400382
ISSN: 0021-8979
Factor impacto JCR: 2.101 (2015)
Categ. JCR: PHYSICS, APPLIED rank: 47 / 145 = 0.324 (2015) - Q2 - T1
Factor impacto SCIMAGO: 0.821 - Physics and Astronomy (miscellaneous) (Q2)
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2021-01-21-10:45:48)
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Record created 2016-01-19, last modified 2021-01-21