Understanding the structural and magnetic evolution of superparamagnetic Zn ferrites nanoparticles synthesized by an easy electrochemical process
In the present work, a series of zinc ferrite nanoparticles of 11 nm on average size were synthesized following an electrochemical method in aqueous medium. The nanoparticles were structurally characterized by X-ray diffraction (XRD), inductively coupled plasma spectroscopy (ICP), transmission elect...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Recursos: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/717619 |
| Acesso em linha: | http://hdl.handle.net/10486/717619 https://dx.doi.org/10.1016/j.jallcom.2021.160585 |
| Access Level: | acceso abierto |
| Palavra-chave: | Cationic distribution electrochemical synthesis magnetization nanoparticles superparamagnetic zinc ferrites Química |
| Resumo: | In the present work, a series of zinc ferrite nanoparticles of 11 nm on average size were synthesized following an electrochemical method in aqueous medium. The nanoparticles were structurally characterized by X-ray diffraction (XRD), inductively coupled plasma spectroscopy (ICP), transmission electron microscopy (TEM), X-ray absorption spectroscopy (XAS) and neutron diffraction (ND). The magnetic characterization was carried out by vibrating sample magnetometer (VSM) and superconducting quantum interference device (SQUID) measurements. The electrochemical synthetic methodology used in this paper yields zinc ferrite monocrystalline nanoparticles with a controlled size, shape and composition, in a reproducible manner. The control of such parameters enables obtaining ferrite nanoparticles with tuneable magnetic properties. The results show that the Zn2+ cations are situated in tetrahedral sites in the crystalline spinel structure, which causes a progressive decrease in the magnetic moments of the ferrites with Zn content due to the breakdown of the super-exchange interactions |
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