Thermal Decomposition Pathways of ZnxFe3- xO4Nanoparticles in Different Atmospheres

3Citations
Citations of this article
10Readers
Mendeley users who have this article in their library.
Get full text

Abstract

This article shows how initial composition and thermal treatment of nonstoichiometric zinc ferrite nanoparticles (nZFN) can be chosen to adjust the structure and cation distribution and enhance magnetism in the resulting nanoscale material. It also provides insight into new prospects regarding the production and design of nanoscale materials. Investigations were conducted before and after heating of nZFN in an inert atmosphere and a vacuum up to temperature of 1170 °C. Annealing leads to partial reduction of Fe ions, enhanced magnetism, and an increase in the size of the particles independent of the atmosphere. Use of the inert atmosphere delivers a solid solution of magnetite and zinc ferrite with a reduced Zn content in the structure as a result of sublimation of newly formed ZnO and reduction of Fe, and it favors crystallization. A preference for normal-spinel phase and enhancement of magnetic saturation from 20 Am2/kg up to 101 Am2/kg was observed. Vacuum annealing with high probability produces ZnO, Fe3O4, and Fe2O3multiphase system with signs of amorphization, mainly on the surface. A large fraction of Fe ions is reduced and the volume ratio of Fe3O4to Fe2O3increases with heating time. The final solid product from a complete decomposition of ZFN is magnetite.

Cite

CITATION STYLE

APA

Kuciakowski, J., Stȩpień, J., Żukrowski, J., Lachowicz, D., Żywczak, A., Gajewska, M., … Kmita, A. (2022). Thermal Decomposition Pathways of ZnxFe3- xO4Nanoparticles in Different Atmospheres. Industrial and Engineering Chemistry Research, 61(34), 12532–12544. https://doi.org/10.1021/acs.iecr.2c01572

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free