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Crossover between extrinsic and intrinsic dielectric loss mechanisms in SrTiO3 thin films at microwave frequencies

Publications associées (32)

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Copper and transparent-conductor reflectarray elements on thin-film solar cell Panels

Christophe Ballif, Julien Perruisseau-Carrier, Sylvain Nicolay, Monica Morales Masis

This work addresses the task of integrating reflectarray antennas on thin-film solar cell panels, as a means to save real estate, weight or cost of platforms, such as satellites or transportable autonomous antenna systems. Reflectarray unit cell families, ...

Institute of Electrical and Electronics Engineers2014

Characterization method of dielectric properties of free falling drops in a microwave processing cavity and its application in microwave internal gelation

Manuel Alexandre Pouchon, Sébastien Vaucher, Cédric Cozzo

Microwave internal gelation (MIG) is a chemical process proposed for the production of nuclear particle fuel. The internal gelation reaction is triggered by a temperature increase of aqueous droplets falling by gravity by means of non-contact microwave hea ...

2013

The low temperature microwave absorption anomaly reported by Corzilius et al. [Phys. Rev. B 75, 235416 (2007)] in single-wall carbon nanotubes (SWCNTs) is revisited. It was originally reported that the microwave absorption of CVD grown SWCNTs shows an unex ...

Wiley-V C H Verlag Gmbh2012

This paper presents a new composite material, which is developed by mixing calcium alginate spheres with commercially available epoxies Stycas 2850 FT (s2850) and Stycast W19 (W19). The resulting composite material is examined in terms of transmission and ...

2012

Piezoelectric wurtzite ScxAl1-xN (x = 0, 0.1, 0.2, 0.3) thin films were epitaxially grown by reactive magnetron co-sputtering from elemental Sc and Al targets. Al2O3(0001) wafers with TiN(111) seed and electrode layers were used as substrates. X-ray diffra ...

American Institute of Physics2012

Lead zirconate titanate (Pb(Zr1-xTix)O3 or PZT) ferroelectric ceramics have been widely used in transducers, actuators, and sensors, since they posses high dielectric and piezoelectric properties with a relatively high temperature of operation. Commerciall ...

EPFL2011

Dielectric measurements of tropical wood

Juan Ramon Mosig, Jean-François Zürcher, Olivier Videme Bossou

The aim of this paper is to determine the dielectric characteristics of tropical wood species at microwaves frequency in order to use them as planar antenna substrate. The measurements have been done on dried wood in the frequency range 8.2-12.4 GHz The su ...

2010

Lattice dynamics and dielectric response of undoped, soft and hard PbZr0.42Ti0.58O3

Dragan Damjanovic, Li Jin, Viktor Porokhonskyy

In this study, ceramic samples of lead zirconate titanate Pb(Zr0.42Ti0.58)O3 (PZT 42/58) doped with Fe (hard) and Nb (soft) were studied by Raman, infrared (IR) and THz spectroscopy in the temperature range from 900 to 20 K. From the evaluation of the IR a ...

Taylor & Francis2010

Innovative devices for electron spin resonance spectroscopy on small samples

Malika Bouterfas

Within the past few years, the field of Electron Spin Resonance has become an important tool in physical, chemical and biological research. However, in many cases its usefulness is limited by the sensitivity of the experimental setup. A typical example is ...

EPFL2008

Tunable composite nanoparticle for plasmonics

Olivier Martin

We present a numerical study of the tunability properties of a plasmonic subwavelength particle deposited on a metallic slab. The particle is composed of a metallic part, supporting a localized plasmon mode, separated from the slab by a dielectric spacer. ...

Optical Society of America2006