We developed an autonomous and efficient system for synthesising ferromagnetic materials with large magnetocrystalline anisotropy by integrating theoretical, informatics, experimental approaches. By combining the first-principles calculation of magnetic Bayesian optimisation, we virtually screened candidate materials, comprising four elements four-layer periods, from various multilayers. employ...

We report unusual cooling field dependence of the exchange bias in oxide-coated cobalt nanoparticles embedded within the nanopores of a carbon matrix. The size-distribution of the nanoparticles and the exchange bias coupling observed up to about 200 K between the Co-oxide shell (∼3-4 nm) and the ferromagnetic Co-cores (∼4-6 nm) are the key to understand the magnetic properties of this system. T...

the cu doped nio (nio:cu) nanoparticles were synthesized by co-precipitation method using nicl2.6h2o, cucl2.2h2o for ni and cu sources, respectively. sodium hydroxide has been used as a precipitator agent. effect of cu doping agent on the structural and optical properties of nanostructures were characterized by xrd, sem, afm, spectrophotometry, ftir and vsm techniques. xrd revealed that nio:cu ...

Studies of the magnetization of Fe2O3@Pt nanoparticles at room temperature showed that there is superparamagnetic contribution with high saturation magnetization about 12.35(emu/g), and soft ferromagnetic contribution with narrow coercive field about 58(Oe). In this paper we fitted the hystersis loop of sample with Brillouin function that demonstrating existence of superparamagnetic phase. Tota...

In this work magnetoimpedance (MI) behaviour was studied experimentally for Fe19Ni81(175 nm)/Cu(350 nm)/Fe19Ni81(175 nm) sensitive elements deposited by rf-sputtering. A constant magnetic field was applied in plane of the sandwiches during deposition perpendicular to the Cu-lead in order to induce a magnetic anisotropy. Sandwiches with different width (w) of FeNi parts were obtained. The comple...

Combined power of 59Co Internal Field nuclear magnetic resonance (IF NMR) and ferromagnetic (FMR) allows studying structure morphology metallic Co nanoparticles.

The optical properties of multi-functionalized cobalt ferrite (CoFe2O4), cobalt zinc ferrite (Co0.5Zn0.5Fe2O4), and zinc ferrite (ZnFe2O4) nanoparticles have been enhanced by coating them with silica shell using a modified Stöber method. The ferrites nanoparticles were prepared by a modified citrate gel technique. These core/shell ferrites nanoparticles have been fired at temperatures: 400°C, 6...

Currently, FeNi nanoalloys have received considerable attention for the oxygen reduction reaction (ORR) and evolution (OER) in rechargeable aqueous zinc (Zn)-air batteries (ZABs) because of their high content good chemical stability. However, poor electronic conductivity, small surface area, sluggish activity seriously hinder catalytic performance. Herein, S-modulated supported by hierarchicall...