Results 41 to 50 of about 140,570 (332)

Condensation of the atomic relaxation vibrations in lead-magnesium-niobate at $T=T^*$

, 2013
We present neutron diffraction, dielectric permittivity and photoconductivity measurements, evidencing that lead-magnesium niobate experiences a diffuse phase transformation between the spherical glass and quadrupole glass phases, in the temperature ...
Chen, Haydn, Chou, Chen-Chia, Dkhil, Brahim, Malitskaya, Maria A., Prosandeev, Sergey, Raevskaya, Svetlana I., Raevski, Igor P.   +6 more
core   +2 more sources

Nontrivial dependence of dielectric stiffness and SHG on dc bias in relaxors and dipole glasses

, 2004
Dielectric permittivity and Second Harmonic Generation (SHG) studies in the field-cooled mode show a linear dependence of dielectric stiffness (inverse dielectric permittivity) on dc bias in PMN-PT crystals and SHG intensity in KTaO$_{3}$:Li at small Li ...
A. S. Emelyanov, Chu F., Colla E. V., Eden S., Emel’yanov S. M., Eugene V. Colla, I. P. Raevski, J-L. Dellis, L. Jastrabik, M. El Marssi, Patashinski A. Z., Raevski I. P., S. A. Prosandeev, S. E. Kapphan, Sakudo T., Vaks V. G.   +15 more
core   +1 more source

Self-Healing, High-Permittivity Silicone Dielectric Elastomer [PDF]

ACS Macro Letters, 2016
Currently used dielectric elastomers do not have the ability to self-heal after detrimental events such as tearing or electrical breakdown, which are critical issues in relation to product reliability and lifetime. In this paper, we present a self-healing dielectric elastomer that additionally possesses high dielectric permittivity and consists of an ...
Madsen, Frederikke Bahrt, Yu, Liyun, Skov, Anne Ladegaard   +2 more
openaire   +3 more sources

MXene/PVDF metacomposites with ultra-high and negative permittivity

EPJ Applied Metamaterials
The dielectric behavior of MXene/polyvinylidene fluoride (PVDF) metacomposites, which simultaneously exhibit ultra-high dielectric constants and negative permittivity, has been investigated.
Li Wei, Lv Fei, Hou Qing
doaj   +1 more source

Dielectric spectroscopy and hydrogen bonding studies of 1-chloropropane–ethanol mixture using TDR technique [PDF]

Journal of Advanced Dielectrics, 2019
The time-domain reflectometry technique was exercised to assess the complex permittivities of 1-chloropropane and ethanol along with their binary mixture in the frequency range of 10MHz–50GHz and in the temperature range of 10–25∘C. Dielectric parameters
Ravindra V. Shinde, Avadhut R. Deshmukh, Shital A. Ingole, Ashok C. Kumbharkhane   +3 more
doaj   +1 more source

Gaseous density calculation by means of relative permittivity measurement

Measurement: Sensors, 2021
This study presents a gaseous density calculation method on the basis of relative permittivity measurement. The relative permittivity of a gas sample is measured by using a cylindrical microwave cavity resonator in wide temperature and pressure ranges ...
Yuya Kano, Naoki Kuramoto
doaj   +1 more source

Imaging of Microwave Permittivity, Tunability, and Damage Recovery in (Ba,Sr)TiO3 Thin Films

, 1999
We describe the use of a near-field scanning microwave microscope to quantitatively image the dielectric permittivity and tunability of thin-film dielectric samples on a length scale of 1 micron. We demonstrate this technique with permittivity images and
Anlage, Steven M., Canedy, C., Melngailis, J., Ramesh, R., Stanishevsky, A., Steinhauer, D. E., Vlahacos, C. P., Wellstood, F. C.   +7 more
core   +1 more source

Nanoscale dielectric properties of insulating thin films: From single point measurements to quantitative images [PDF]

, 2010
Dielectric relaxation (DR) has shown to be a very useful technique to study dielectric materials like polymers and other glass formers, giving valuable information about the molecular dynamics of the system at different length and time scales.
Alegría, Angel, Arinero, Richard, Colmenero, Juan, Lévêque, Gérard, Riedel, Clément, Schwartz, Gustavo Ariel, Tordjeman, Philippe   +6 more
core   +4 more sources

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

Quantitative imaging of dielectric permittivity and tunability with a near-field scanning microwave microscope

, 2000
We describe the use of a near-field scanning microwave microscope to image the permittivity and tunability of bulk and thin film dielectric samples on a length scale of about 1 micron. The microscope is sensitive to the linear permittivity, as well as to
A. Stanishevsky, Belhadj-Tahar N., C. Canedy, C. P. Vlahacos, D. E. Steinhauer, F. C. Wellstood, J. Melngailis, R. Ramesh, Steven M. Anlage   +8 more
core   +1 more source