nanocrystalline particles of barium hexaferrite has been prepared by the sol–gel auto- combustion method using iron and barium nitrate with a ba:fe molar ratio of 1:10. the effect of fuel such as citric acid and aspartic acid was investigated on the structure and magnetic properties of nanoparticles. the results revealed that the formation of barium hexaferritefine particles is influenced by mo...

Keywords: Cobalt ferrite Gd-substitution Raman spectroscopy Magnetic properties Neel temperature a b s t r a c t Polycrystalline gadolinium (Gd) substituted cobalt ferrites (CoFe 2Àx Gd x O 4 ; x = 0–0.3, referred to CFGO) ceramics have been synthesized by solid state reaction method. Chemical bonding, crystal structure and magnetic properties of CFGO compounds have been evaluated as a function...

We report dynamic alternation of the redox chemistry of the Fe/ Fe couple in magnetite during high temperature water−gas shift reaction in Cu codoped Mmodified ferrite catalysts. Various hematitic solid solutions of the type Fe2O3−MxOy−CuOx with M = Cr, Ce, Ni, Co, Mn, and Zn are synthesized using the industrially economical and environmentally friendly coprecipitation method. Interestingly, Cu...

In this work, an experiment was carried out to investigate the preparation condition of anisotropic, Fe-deficient, M-type Sr ferrite with optimum magnetic and physical properties by changing experimental parameters, such as La substitution amount little additive modification during fine milling process. The compositions calcined ferrites were chosen according stoichiometry LaxSr1-xFe12-2xO19, w...

a series of copper and cobalt substituted nanospinel ferrites have been synthesized by the hydrothermal method. these compounds were characterized by ft-ir, xrd, edx, sem and vsm techniques. all of the synthesized nanospinel ferrites were found to be highly efficient and magnetically recoverable in the solvent-free synthesis of substituted 2,6-(2-hydroxybenzyl)-phenols (trisphenols). a wide ran...

In this paper, ferrites are applied in a partitioned stator wound field switched flux (PS-WFSF) machine to increase the air-gap density, and hence, average electromagnetic torque overload capability. Introducing short-circuited inner PS-WFSF can open-circuit phase fundamental back-EMF at 60 W copper loss by 2.33% 3.77%, respectively. Moreover, proposed with exhibit better capability than conven...