NiCr x Fe2−x O4 ferrite nanoparticles and their composites with polypyrrole: synthesis, characterization and magnetic properties

EH El-Ghazzawy, SN Alamri - Bulletin of Materials Science, 2015 - Springer
Nanocrystalline nickel chromium ferrite (NiCr x Fe 2− x O 4, x= 0.1, 0.2) have been prepared
by the chemical co-precipitation method. Half of the samples have been sintered at 620∘ C …

Effect of domain and grain shapes on the dynamical behavior of polycrystalline ferrites: Application to the initial permeability

P Gelin, P Quéffélec, F Le Pennec - Journal of applied physics, 2005 - pubs.aip.org
This paper describes a theoretical approach to calculate the permeability tensor of
polycrystalline ferrites in various magnetization states, from the completely demagnetized …

Estimation of complex permittivity using evolutionary algorithm from measured data of reflectance and transmittance in free space

V Křesálek, M Navrátil - Microwave and Optical Technology …, 2015 - Wiley Online Library
This article deals with the determination of permittivity and dissipation factor of thin layers in
microwave range of electromagnetic spectra. An evolutionary algorithm is used for the …

[PDF][PDF] Enhancement of Dielectric Constant in Metal-Dielectric Meta-materials

O Rybin - The African Review of Physics, 2009 - lamp.ictp.it
A two component meta-material as copper cylindrical wires embedded periodically in the
host dielectric material (wax) is studied with a viewpoint of measuring and analysing its …

Electromagnetism and magnetization in granular two-phase nanocomposites: a comparative microwave study

C Brosseau, S Mallégol, P Queffelec… - Journal of Applied …, 2007 - pubs.aip.org
Cold-pressed powder compacts in our experiments were prepared from commercial
nanopowders of ZnO, Ni, Co and γ‐Fe 2 O 3⁠. A systematic study of the room temperature …

[PDF][PDF] Broadband microwave measurements of relative permittivity and permeability of materials

O Rybin, T Abbas - Journal of Research (Science). Bahauddin …, 2007 - researchgate.net
A short review of modern techniques for broadband microwave measuring complex
permittivity and permeability of materials at broadband microwave frequencies has been …

Extension and error analysis of the microstrip transmission-line method for the broad-band measurement of the permeability tensor

S Mallégol, P Queffelec - IEEE transactions on microwave …, 2006 - ieeexplore.ieee.org
In this paper, the theory associated with a noniterative and broad-band method for
measuring the permeability tensor components/spl mu/=/spl mu/'-j/spl mu/''and/spl …

Effects of domain, grain, and magnetic anisotropy distributions on magnetic permeability: Monte-Carlo approach

J Chun, A Mark Jones, JS McCloy - Journal of Applied Physics, 2012 - pubs.aip.org
We have investigated the effects of domain and grain anisotropy on spin-resonance in
magnetic permeability, implementing a Monte-Carlo approach and a coupled Landau …

Nonresonance effective electromagnetic response of sandwich metamaterial with ferrite inclusions

O Rybin, K Yemelyanov, T Nawaz - Multidiscipline Modeling in …, 2011 - emerald.com
Purpose–The purpose of this paper is to obtain the long‐wave approximations for the
effective electromagnetic response of two‐dimensional sandwich composite structure, as …

[PDF][PDF] Miniaturized Microstrip Patch Antenna on YIG Material Under External Magnetic Field.

A Stepanyan, H Haroyan… - Armenian Journal of …, 2023 - researchgate.net
This paper discusses an electrically small microstrip patch antenna that utilizes biased
yttrium iron garnet (YIG) ferrite material. The study explores how the presence of an external …