Structural characterization and magnetic behavior due to the cationic substitution of lanthanides on ferrite nanoparticles

Pinto García, Cristóbal; Maine, Arianne; Valenzuela-Fernández, Rodrigo A.; Aliaga Cerón, Álvaro; Barahona-Huenchumil, Patricia; Peña, Octavio; Álvarez-Serrano, Inmaculada; Ibáñez, Andrés; Melo, Francisco; Galdámez Silva, Antonio

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dc.contributor.author	Pinto García, Cristóbal
dc.contributor.author	Maine, Arianne
dc.contributor.author	Valenzuela-Fernández, Rodrigo A.
dc.contributor.author	Aliaga Cerón, Álvaro
dc.contributor.author	Barahona-Huenchumil, Patricia
dc.contributor.author	Peña, Octavio
dc.contributor.author	Álvarez-Serrano, Inmaculada
dc.contributor.author	Ibáñez, Andrés
dc.contributor.author	Melo, Francisco
dc.contributor.author	Galdámez Silva, Antonio
dc.date.accessioned	2024-07-26T16:37:13Z
dc.date.available	2024-07-26T16:37:13Z
dc.date.issued	2024
dc.identifier.uri	http://repositorio.ucm.cl/handle/ucm/5500
dc.description.abstract	A new series of [Fe3−xLnx]O4 nanoparticles, with Ln = Gd; Dy; Lu and x = 0.05; 0.1; 0.15, was synthesized using the coprecipitation method. Analyses by X-ray diffraction (XRD), Rietveld refinement, and high-resolution transmission electron microscopy (HRTEM) indicate that all phases crystallized in space group 𝐹𝑑3̲𝑚 , characteristic of spinels. The XRD patterns, HRTEM, scanning electron microscopy analysis (SEM-EDS), and Raman spectra showed single phases. Transmission electron microscopy (TEM), Rietveld analysis, and Scherrer’s calculations confirm that these materials are nanoparticles with sizes in the range of ~6 nm to ~13 nm. Magnetic measurements reveal that the saturation magnetization (Ms) of the as-prepared ferrites increases with lanthanide chemical substitution (x), while the coercivity (Hc) has low values. The Raman analysis confirms that the compounds are ferrites and the Ms behavior can be explained by the relationship between the areas of the signals. The magnetic measurements indicate superparamagnetic behavior. The blocking temperatures (TB) were estimated from ZFC-FC measurements, and the use of the Néel equation enabled the magnetic anisotropy to be estimated.	es_CL
dc.language.iso	en	es_CL
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 Chile	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/cl/	*
dc.source	Nanomaterials, 14(11), 971	es_CL
dc.subject	Spinels	es_CL
dc.subject	Inorganic materials	es_CL
dc.subject	Superparamagnetic behavior	es_CL
dc.subject	Lanthanides	es_CL
dc.subject	Ferrites	es_CL
dc.title	Structural characterization and magnetic behavior due to the cationic substitution of lanthanides on ferrite nanoparticles	es_CL
dc.type	Article	es_CL
dc.ucm.facultad	Facultad de Ciencias Básicas	es_CL
dc.ucm.indexacion	Scopus	es_CL
dc.ucm.indexacion	Isi	es_CL
dc.ucm.uri	mdpi.com/2079-4991/14/11/971	es_CL
dc.ucm.doi	doi.org/10.3390/nano14110971	es_CL