Results 31 to 40 of about 431,725 (135)

Local Dielectric Spectroscopy of Nanocomposite Materials Interfaces

open access: yes, 2009
Local dielectric spectroscopy is performed to study how relaxation dynamics of a poly-vinyl-acetate ultra-thin film is influenced by inorganic nano-inclusions of a layered silicate (montmorillonite).
Capaccioli, Simone   +5 more
core   +1 more source

Dielectric properties of natural media

open access: yes, 2006
Dielectric, refractive and possibly magnetic properties of the media to be studied with microwave radiometry are important in several ways. First, the absorption coefficient follows from the imaginary part of the refractive index. The refractive index is a simple function of the dielectric constant and of the magnetic permeability.
Schwank, M.   +4 more
openaire   +4 more sources

Optical Properties of Bismuth Nanostructures Towards the Ultrathin Film Regime

open access: yes, 2019
Bulk bismuth presents outstanding optical properties, such as a giant infrared refractive index (n near 10) and a negative ultraviolet visible permittivity induced by giant interband electronic transitions. Although such properties are very appealing for
Deeb, Claire   +3 more
core   +1 more source

Characterization of polybenzimidazole (PBI) film at high temperatures [PDF]

open access: yes
Polybenzimidazole, a linear thermoplastic polymer with excellent thermal stability and strength retention over a wide range of temperatures, was evaluated for its potential use as the main dielectric in high temperature capacitors.
Hammoud, Ahmad N., Suthar, J. L.
core   +1 more source

Dielectric catastrophe at the magnetic field induced insulator to metal transition in Pr1-xCaxMnO3 (x=0.30, 0.37) crystals

open access: yes, 2006
The dielectric permittivity and resistivity have been measured simultaneously as a function of magnetic field in Pr1-xCaxMnO3 crystals with different doping. A huge increase of dielectric permittivity was detected near percolation threshold.
Aebischer   +42 more
core   +2 more sources

Large Magneto-Dielectric Effects in Orthorhombic HoMnO3 and YMnO3

open access: yes, 2005
We have found a remarkable increase (up to 60 %) of the dielectric constant with the onset of magnetic order at 42 K in the metastable orthorhombic structures of YMnO3 and HoMnO3 that proves the existence of a strong magneto-dielectric coupling in the ...
Chu, C. W.   +3 more
core   +1 more source

Tunable Dielectric Properties of Ferrite-Dielectric Based Metamaterial

open access: yesPLOS ONE, 2015
A ferrite-dielectric metamaterial composed of dielectric and ferrite cuboids has been investigated by experiments and simulations. By interacting with the electromagnetic wave, the Mie resonance can take place in the dielectric cuboids and the ferromagnetic precession will appear in the ferrite cuboids.
Qingmin Wang   +6 more
openaire   +5 more sources

Method for determining properties of microinstabilities of a magnetized plasma [PDF]

open access: yes, 1969
Study comprises a determination of the plasma density at which absolute density becomes predominant by using the dielectric properties at this incipient unstable state.
Callen, J. D., Mc Cune, J. E.
core   +1 more source

Effect of soil texture on the microwave emission from soils [PDF]

open access: yes
The intensity brightness temperature of the microwave emission from the soil is determined primarily by its dielectric properties. The large difference between the dielectric constant of water and that of dry soil produces a strong dependence of the soil'
Schmugge, T. J.
core   +1 more source

An empirical model for the complex dielectric permittivity of soils as a function of water content [PDF]

open access: yes
The recent measurements on the dielectric properties of soils shows that the variation of dielectric constant with moisture content depends on soil types.
Chmugge, T. J., Wang, J. R.
core   +1 more source

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