Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) techniques at both Fe and Mn K-edges were used to investigate the formation of MnFe(2)O(4) nanoparticles embedded in a silica aerogel matrix as a function of calcination temperature (at 450, 750 and 900 degrees C). Up to 450 degrees C, two separated highly-disordered phases of iron and manganese ar...

Current inductors are the major impediment for miniaturization of electronics, due to the lack of magnetic materials with suitable high frequency properties. Future economically viable miniaturized high frequency electronic components require a low loss high frequency magnetic nanocomposite paste that is compatible with the low temperature powered circuit board (“PCB”) process. Inframat Corpora...

Samples of ferrite spinels doped with manganese cations were obtained via organic co-precipitation, and their structure, morphology magnetic properties studied.

We present a facile synthesis of manganese oxide (MnO(2)) nanocomposite with ultraviolet (UV) photosensitive characteristic by a solid-state reaction based on the reduction of potassium permanganate (KMnO(4)) by aniline, which provides a new family and more selectivity for UV photosensitive nanomaterials in the future.

The decontamination reactions of O,S-diethyl methyl phosphonothiolate, as an agricultural organophosphorous pesticide onto 20 wt% loaded manganese dioxide nanoparticles-silver-Y zeolite as a nanocomposite catalyst in different solvents, were evaluated and monitored by means of gas chromatography–flame ionization detector and gas chromatography–mass spectrometry. Prior to the reaction, the catal...

In this work, the investigation of wave absorption, phase formation, crystal structure and magnetic properties of SrFe12O19 hexa-ferrites nanoparticles that synthesized by co-precipitation using a microwave heating system and polyaniline-SrFe12O19 was carried out by using a combination of vector network analyser (VNA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier tra...

MnZn ferrite (MnZnFe2O4, MZF) nanoparticles (NPs) represent an intriguing class of magnetic NPs in terms of composition-tunable magnetic properties, but the ability to control the size and morphology is essential to exploit such properties. This report describes the findings of an investigation of the size and morphology controllability in terms of growth kinetics of the NPs in a thermochemical...

The exchange constants and electronic structure of manganese ferrite (MnFe2O4) were calculated using Becke’s density functional. The total exchange energy consists of Hartree–Fock (HF) and Becke’s density functional terms. We introduced one parameter w as the weight of HF’s contribution. We also introduced a parameter a to scale the radial part of the 3d wave functions of Fe ions. By varying w ...