Low-loss spinel nanoferrite with matching permeability and permittivity in the ultrahight frequency range - Université de Bretagne Occidentale Access content directly
Journal Articles Journal of Applied Physics Year : 2010

Low-loss spinel nanoferrite with matching permeability and permittivity in the ultrahight frequency range

Abstract

Ferrite nanoparticles with a composition of Ni0.5Zn0.3Co0.2Fe2O4 were prepared by a co-precipitation method. The sample obtained after treating at approating conditions had almost equal real permeability and permittivity, of 4.8+j0.15 (loss tangent~0.04) and 4.9+j0.10 (loss tangent~0.018), respectively, over 100MHz to 500 MHz,. This material had a refractive index n of close to 5 and a reduced impedance Z/Z0 of close to 1. These properties make the material useful to the design of miniaturized antennas at VHF-UHF (100MHz-500MHz) bands.
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Dates and versions

hal-00517482 , version 1 (14-09-2010)

Identifiers

  • HAL Id : hal-00517482 , version 1

Cite

Atul Thakur, Alexis Chevalier, Jean-Luc Mattei, Patrick Queffelec. Low-loss spinel nanoferrite with matching permeability and permittivity in the ultrahight frequency range. Journal of Applied Physics, 2010, 108, pp.014301. ⟨hal-00517482⟩
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