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Purpose: The aim of this review is recapitulating the temperature dependence of FMR/EPR spectra of low concentration of magnetic nanoparticles and ultralow concentration localized magnetic centers (defects, free radicals, the lower oxidation state of titanium ions) in different materials. Design/methodology/approach: Reorientation processes correlated and isolated spin systems during changing temperature...
Purpose: The aim of this review is recapitulating the FMR study of low concentration of magnetic nanoparticles in non-magnetic matrices. Design/methodology/approach: Magnetic nanoparticles exhibit a variety of anomalous magnetic properties and they could be used for forming low concentration in different matrices. This way, they are being found to be allowing for effectively novel applications of...
A new poly(ester–b–ether) copolymer filled with magnetic γ-Fe 2 O 3 nanoparticles of low concentration (0.1 and 0.3wt%) has been synthesized, with poly(ethylene terephthalate) (PET) as a rigid segment and poly(tetraoxymethylene) (PTMO) as the flexible segment at the ratio of 50wt%. The filler was used in the form of suspension or solid powder. The dielectric spectroscopy results for...
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