Abstract Lanthanum (La)-substituted cobalt ferrites CoFe 2- x La O 4 ( = 0.00–0.09) were successfully prepared using the sucrose sol-gel auto-combustion route. La-substitution effects on structural, magnetic, and electrical/dielectric characteristics investigated different techniques. X-ray diffraction (XRD) results displayed a deviation from single-phase structure at La-content ? 0.04 because ...

in this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (cofe2o4)/sio2 and manganese doped cobalt ferrite nanoparticles (mnxco1-xfe2o4 with x= 0.02, 0.04 and 0.06)/sio2 for possible biomedical application. all the ferrites nanoparticles were prepared by co-precipitation method using fecl3.6h2o, cocl2.6h2o and mncl2.2h2o as precursors, and were silica coated ...

More abundant and economically friendly Sr-doped praseodymium ferrites show an increase in the electrocatalytic activity as amount of Sr dopant increases that is linked to increasing concentration oxygen vacancy.

• Nanostructured cobalt ferrites' magnetic properties. “Janus effect” of starch coating on ferrite magnetization. Co-precipitation and hydrothermal methods/starch – increased Mechanochemical microemulsion decreased To investigate the behavior starch-coated ferrites, well-established synthetic methods, i.e., coprecipitation, mechanochemical, ultrasonically assisted microemulsion, microwave-assis...

Most carrier cores for electrophotography are made from Cu-Zn or Ni-Zn ferrites. But in recent years, the use of these materials has been restricted by environmental regulations in many countries. In answer, we have developed clean carrier cores from environmentally iiiendly magnetic materials. One such material is magnetite, which we at FDK Corporation mass-produce by using an original product...

We shall review some results from several areas of oxide science in which neutron scattering and X-ray synchrotron scattering exercise a complementary role to high-resolution transmission electron microscopy. The very highresolution time-of-flight neutron diffraction technique and its role in studies of the magnetic structure of oxides will especially be reviewed. The selected topics of structu...

A phase-steered microstrip antenna array is presented, suitable for application as a mobile vehicle satellite terminal. Phase shifters are implemented on a hybrid dielectric-ferrite substrate, and use is made of the phase transition near the cut-off region of the biased ferrite. Small permanent magnets and carefully biased ferrites remove the need for large applied electromagnetic fields. 2-, 3...

The microtexture of differently prepared Ba-hexaferrite samples is investigated by means of electron backscatter diffraction (EBSD). Kikuchi patterns are obtained with a high image quality, enabling a spatial resolution of the EBSD maps of about 20 nm. The spatially highly resolved EBSD mappings provide additional information (individual grain orientation, misorientation angles, grain size dist...