Mechanisms of Dielectric Loss in Microwave Materials

1999 ◽  
Vol 603 ◽  
Author(s):  
Alexander Tagantsev
Keyword(s):  
Experimental Data ◽  
Dielectric Loss ◽  
Dielectric Permittivity ◽  
Electric Field ◽  
Present Knowledge ◽  
Theoretical Knowledge ◽  
Intrinsic Loss ◽  
Dc Electric Field ◽  
Microwave Materials ◽  
Loss Mechanisms

AbstractThe present knowledge on mechanisms for dielectric loss at microwave and higher frequencies is reviewed. A special attention is paid to the intrinsic loss mechanisms. Relation between the loss and the dielectric permittivity as well as the effect of dc electric field on the loss are discussed. The theoretical knowledge is compared to the existing experimental data.

DC electric field dependence for the dielectric permittivity in antiferroelectric and ferroelectric states

2014 ◽  
Vol 587 ◽  
pp. 827-829 ◽  
Author(s):  
Jinfei Wang ◽  
Tongqing Yang ◽  
Shengchen Chen ◽  
Xi Yao ◽  
A. Peláiz-Barranco
Keyword(s):  
Dielectric Permittivity ◽  
Electric Field ◽  
Field Dependence ◽  
Electric Field Dependence ◽  
Dc Electric Field

SiO2–Ti0.98In0.01Nb0.01O2 composite ceramics with low dielectric loss, high dielectric permittivity and an enhanced breakdown electric field

RSC Advances ◽  
2016 ◽  
Vol 6 (24) ◽  
pp. 20074-20080 ◽  
Author(s):  
Jinglei Li ◽  
Zhuo Xu ◽  
Fei Li ◽  
Xuhui Zhu ◽  
Shujun Zhang
Keyword(s):  
Solid State ◽  
Dielectric Loss ◽  
Dielectric Permittivity ◽  
Electric Field ◽  
Composite Ceramics ◽  
Breakdown Electric Field ◽  
Low Dielectric ◽  
High Dielectric Permittivity ◽  
Solid State Sintering ◽  
High Dielectric

SiO2–Ti0.98In0.01Nb0.01O2 (SiO2–TINO) composite ceramics were synthesized by solid-state sintering methods, where the lower dielectric loss and enhanced breakdown electric field were achieved.

scholarly journals RF-Characterization of HZO Thin Film Varactors

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 980
Author(s):  
Sukhrob Abdulazhanov ◽  
Quang Huy Le ◽  
Dang Khoa Huynh ◽  
Defu Wang ◽  
Maximilian Lederer ◽  
...  
Keyword(s):  
Thin Film ◽  
Dielectric Loss ◽  
Dielectric Permittivity ◽  
Electric Field ◽  
Zirconium Oxide ◽  
Electric Field Distribution ◽  
Frequency Range ◽  
Microwave Characterization ◽  
Reflectivity Method

A microwave characterization at UHF band of a ferroelectric hafnium zirconium oxide metal-ferroelectric-metal (MFM) capacitors for varactor applications has been performed. By using an impedance reflectivity method, a complex dielectric permittivity was obtained at frequencies up to 500 MHz. Ferroelectric Hf0.5Zr0.5O2 of 10 nm thickness has demonstrated a stable permittivity switching in the whole frequency range. A constant increase of the calculated dielectric loss is observed, which is shown to be an effect of electric field distribution on highly resistive titanium nitride (TiN) thin film electrodes. The C-V characteristics of a “butterfly” shape was also extracted, where the varactors exhibited a reduction of capacitance tunability from 18.6% at 10 MHz to 15.4% at 500 MHz.

Modification of Ferroelectric Properties of TGS Crystals Grown under a dc Electric field

2000 ◽  
Vol 658 ◽  
Author(s):  
G. Arunmozhi ◽  
E. Nogueira ◽  
E.de Matos Gomes ◽  
S. Lanceros-Mendez ◽  
M. Margarida ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Electric Field ◽  
Ferroelectric Phase ◽  
Ferroelectric Properties ◽  
Ambient Conditions ◽  
X Ray Diffraction ◽  
Triglycine Sulphate ◽  
X Ray ◽  
Dc Electric Field ◽  
Diffraction Patterns

ABSTRACTFerroelectric triglycine sulphate crystals have been grown under the influence of an intense electric field of 6×104 V/m. Relative to crystals grown under ambient conditions (TGS) the crystals grown under the electric field (TGS-E) display a dielectric permittivity a factor of two lower. Significant differences are observed in the Curie-Weiss behavior of the ferroelectric phase, in the x-ray diffraction patterns and in the differential calorimetry measurements.

Nonlinear photoacoustic effect of semiconductors in dc electric field

1990 ◽  
Vol 68 (8) ◽  
pp. 3865-3871 ◽  
Author(s):  
Jian‐chun Cheng ◽  
Shu‐yi Zhang ◽  
Yue‐sheng Lu
Keyword(s):  
Electric Field ◽  
Photoacoustic Effect ◽  
Dc Electric Field
Sign in / Sign up

Export Citation Format

Share Document