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A possibility of obtaining metallodielectric materials with a novel method of incorporation of arrays of metallic nanoparticles into dielectric crystals has been studied on the example of Bi12GeO20 as a single crystal material and Ni (20 nm) and Co (28 nm) nanoparticles as dopants. The nanoparticles were added into the single crystal melt and then the material has been crystallized using the micro-pulling...
Nanostructuring is one of the effective approaches to lower the thermal conductivity of materials. Nanostructured skutterudite-related compounds CoSb3, Fe0.5Ni0.5Sb3, Fe0.25Ni0.25Co0.5Sb3 and Te-doped CoSb3 were synthesized by a solvothermal route. The bulk materials were prepared by hot pressing or spark plasma sintering from the solvothermally synthesized nanopowders. The thermal conductivity values...
In this paper, we present systematic effective permeability measurements of magnetically structured granular systems composed of magnetic grains embedded in a nonmagnetic matrix using broadband microwave spectroscopy. Using the transmission/reflection waveguide method, the effective complex permeability was measured in the frequency range of 0.01-10 GHz. The results are compared for composites consisting...
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