The Influence of Zn Substitution on Physical Properties of CoFe(2)O(4) Nanoparticles

Co(1−x)Zn(x)Fe(2)O(4) nanoparticles (0 ≤ x ≤ 1) have been synthesized via a green sol–gel combustion method. The prepared samples were studied using X-ray diffraction measurements (XRD), transmission electron microscopy (TEM), Raman, and magnetic measurements. All samples were found to be single pha...

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Detalles Bibliográficos
Autores principales: Szatmari, Adam, Bortnic, Rares, Souca, Gabriela, Hirian, Razvan, Barbu-Tudoran, Lucian, Nekvapil, Fran, Iacovita, Cristian, Burzo, Emil, Dudric, Roxana, Tetean, Romulus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9823853/
https://www.ncbi.nlm.nih.gov/pubmed/36616099
http://dx.doi.org/10.3390/nano13010189
Descripción
Sumario:Co(1−x)Zn(x)Fe(2)O(4) nanoparticles (0 ≤ x ≤ 1) have been synthesized via a green sol–gel combustion method. The prepared samples were studied using X-ray diffraction measurements (XRD), transmission electron microscopy (TEM), Raman, and magnetic measurements. All samples were found to be single phases and have a cubic Fd-3m structure. EDS analysis confirmed the presence of cobalt, zinc, iron, and oxygen in all studied samples. Raman spectra clearly show that Zn ions are preferentially located in T sites for low Zn concentrations. Due to their high crystallinity, the nanoparticles show high values of the magnetization, which increases with the Zn content for x < 0.5. The magnetic properties are discussed based on Raman results. Co ferrite doped with 30% of Zn produced the largest SAR values, which increase linearly from 148 to 840 W/g(MNPs) as the H is increased from 20 to 60 kA/m.