0000000000285850

AUTHOR

D Jakovlevs

showing 2 related works from this author

The study of correlation between microstructure of ferrites and their complex permeability spectra

2013

Theoretical model for complex permeability of polycrystalline ferrite (based on effects arising from realities of typical microstructure of sample) is correlated with experimental data. In the case of NiZn-ferrites there is observed a close agreement with the model and the data; for samples of MnZn-ferrites this agreement is only for small-sized cores; for bigger ones the dimensional effects (dimensional resonance) appear and the model cease to be valid.

Condensed Matter::Materials ScienceMaterials scienceNuclear magnetic resonanceCondensed matter physicsPermeability (electromagnetism)Ferrite (magnet)CrystallitePhysics::Chemical PhysicsMicrostructureSpectral lineIOP Conference Series: Materials Science and Engineering
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Neutron scattering study of structural and magnetic size effects in NiO

2013

Nickel oxide powders with the grain size of 13–1500 nm have been studied by neutron scattering, scanning electron microscopy and vibrating sample magnetometry. We have found that the atomic structure and the antiferromagnetic ordering are nearly independent of the average size of grains. The existence of the uncompensated spins in nanoparticles with the grain size below 100 nm has been detected.

Materials scienceCondensed matter physicsSpinsScanning electron microscopeNickel oxideNon-blocking I/ONanoparticleNeutron scatteringGrain sizeCondensed Matter::Materials ScienceCrystallographyPhysics::Atomic and Molecular ClustersAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsIOP Conference Series: Materials Science and Engineering
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