Characterization of Combustion Synthesis of Ferromagnetic FeAl₂O₄ spinel

Abstract

This is an Accepted Manuscript for the Microscopy and Microanalysis 2020 Proceedings. This version may be subject to change during the production process.

Nano silicated-FeAl2O4 functionalized by DL-alaninium nitrate ionic liquid (FeAl2O4-SiO2@[DL-Ala][NO3]) as versatile promotor for aqua-mediated synthesis of spiro[chromenopyrazole-indene-triones and spiro[chromenopyrazole-indoline-diones

“…FeAl 2 O 4 , which named also as iron aluminate and hercynite, rarely found in nature. It has been synthesized via various methods such as combustion reaction 7 , 8 , furnace heating of iron and aluminum acetylacetonate complexes 9 , microwave magnetic field (H-field) irradiation 10 , thermal treatment of mechanochemically activated (Al + Fe 3 O 4 ) mixtures 11 , and pulsed laser ablation in liquid media technique 12 .…”

Magnetic mapping of hercynite produced by combustion synthesis

“…Spinel-type ferrites have attracted great attention due to its structural characteristics and potential applications, specially related to their magnetic properties. Spinel structured materials have FCC structure and general formula AB2O4 [1] and can be synthetized by several methods, including co-precipitation, sol-gel [2] and combustion reaction [3]. The latter is particularly convenient, even for nanoparticles, due the low cost, high reaction speed, that may take only a few minutes, and for being energetically efficient, because the reaction environment releases enough energy for the reaction to occur [4].…”

“…The latter is particularly convenient, even for nanoparticles, due the low cost, high reaction speed, that may take only a few minutes, and for being energetically efficient, because the reaction environment releases enough energy for the reaction to occur [4]. In this sense, we have synthetized and characterized hercynite particles (FeAl2O4iron-aluminum spinel) with the method described in references [1,3], with citric acid as a combustible. A solution with the iron and aluminum nitrates (in the molar ratio of 1:2) and citric acid, in a stoichiometric proportion, was mixed in a glass evaporation dish.…”