On the contrary, the calculated spin magnetic moments and the exchange splitting of the conduction bands are seen to increase dramatically when moving from the inverse spinel structure to the normal spinel kind. We find substantial orbital moments for NiFe$_{2}$O$_{4}$ and CoFe$_{2}$O$_...
So we can infer that studied compound is stable both in normal (CrAg2O4) and inverse (Ag2CrO4) spinel structure. Electronic, optical and vibrational properties of Ag2CrO4 at 0 and 11 GPa have also been studied. Zone-centre phonon frequencies and the phonon dispersion relations along high...
1) normal spinel 正尖晶石1. Using increment method of the mineral pair O-isotope fractionation, the calculated temperatures between the normal spinel and coexisting minerals are above the equilibria temperature of peridotite assemblages, whereas the temperatures calculated by using inverse spinel-mineral ...
Chitosan (CTS) was coated onto the surface of the as-prepared Fe 3O 4 nanoparticles to enhance its stability and biocompatible properties. The size distribution of the obtained Fe 3O 4 nanoparticles was examined using transmission electron microscopy (TEM). The cubic inverse spinel structure of ...
The generalized gradient approximation (GGA) predicts that the normal MnGa2O4 spinel is a semiconductor with a bandgap of about 0.7 eV, and a bandgap in the structure of the inverse spinel appears only in terms of the GGA + U approach. A simple exchange interaction model is used to ...
Based on our first principles computations, here we predict the existence of such a double spinel compound MgAlGaO4, formed by an equimolar mixing of MgAl2O4 normal and MgGa2O4 inverse spinels. After studying the details of its atomic and electronic structure, we use a cluster expansion based...
Analysis of X-ray diffraction (XRD) data revealed the single phase, crystallinity, and spinel structure of the NF and NZF nanoparticles with a crystallite size of ~ 12 nm and ~ 33 nm, respectively. The prominent (311) peaks of the XRD patterns were analyzed to determine various other ...
Depending on the degree of cation disorder, resulting in local symmetry distortion, the magneto-optical response is found to be strongest for high crystal quality inverse spinels and for disordered normal spinel structure, contrary to the first principle studies of and . The results presented provide...
Luminescence, structure and insight on the inversion degree from normal to inverse spinel in a ZnAl(2x)Fex3+O4 system - ScienceDirectSimon N. Ogugua aOdireleng M. Ntwaeaborwa bHendrik C. Swart aBoletín de la Sociedad Espaola de Cerámica y Vidrio...
So we can infer that studied compound is stable both in normal (CrAg2O4) and inverse (Ag2CrO4) spinel structure. Electronic, optical and vibrational properties of Ag(2)CrO(4)at 0 and 11 GPa have also been studied. Zone-centre phonon frequencies and the phonon dispersion relations along ...