Results 41 to 50 of about 24,613 (311)

Energy storage properties of P(VDF‐TrFE‐CTFE)‐based composite dielectrics with uniform and gradient‐doped boron nitride nanosheets

open access: yesIET Nanodielectrics, 2022
Dielectric capacitors play an important role in advanced electronic and power systems such as portable electronic devices, hybrid electric vehicles and electronic weapon systems, and the improvement of energy storage density will have a positive effect ...
Yanan Shang   +8 more
doaj   +1 more source

Accounting for dielectric losses in piezoelectric shunt tuning [PDF]

open access: yes
International audienceEffective vibration reduction of mechanical structures by piezoelectric shunt damping equires a precise design of the electrical shunt circuit. In this context, the influence of dielectric losses on the accuracy of shunt calibration
Deü, Jean-François   +3 more
core   +1 more source

Interfacial Dielectric Losses in Co-Doped Ni-Zn Ferrites [PDF]

open access: yes, 1997
The temperature and frequency dependence of tg δ and ε' for Ni0.8Zn0.2CoxFe2-x ferrites was studied in the 102-106 Hz frequency range and 20-200°C temperature range. The experimental curves exhibit aspects very dependent of composition.
Steflea, M.   +5 more
core   +1 more source

Microwave dielectric properties of BiFeO3 thin film prepared by aqueous chemical solution deposition method [PDF]

open access: yesProcessing and Application of Ceramics, 2009
We report high frequency dielectric properties of multiferroic BiFeO3 (BFO) thin film deposited by means of aqueous chemical solution deposition on platinized silicon substrate.
Ričardas Sobiestianskas   +4 more
doaj  

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Investigation of Dielectric Losses in Hydrogenated Amorphoussilicon (a-Si:H) thin Films Using Superconducting Microwave Resonators [PDF]

open access: yes, 2012
The improvement of the coherence times of superconducting qubits depends on the reduction of the dielectric losses in the insulating materials implemented for the device fabrication.
Wünsch, S.   +6 more
core   +1 more source

Dielectric properties of bismuth titanate ceramics containing SiO2 and Nd2O3 as additives [PDF]

open access: yesProcessing and Application of Ceramics, 2012
Bismuth-titanate ceramics containing SiO2 and Nd2O3 as additives are synthesized by melt quenching method in the system Bi2O3-TiO2-Nd2O3-SiO2 in the temperature range of 1250–1500 °C. The phase composition of the obtained materials is determined by X-ray
Stanislav S. Slavov   +4 more
doaj  

Performance of silicone rubber composites using boron nitride to replace alumina tri‐hydrate

open access: yesHigh Voltage, 2021
Boron nitride (BN) has attracted increasing attention as a filler using in insulating materials. In this work, by using an equal amount of BN to replace alumina tri‐hydrate (ATH), various SR/BN/ATH composites were prepared, and for comparison, vinyl tri ...
Xin Chen   +6 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Broadband dielectric spectroscopy of multilayer graphene/epoxy nanocomposites [PDF]

open access: yes, 2013
International audienceGraphene is a carbon-based allotrope material which, since very few years, appears as very exciting due to incredible physical properties such as a high electron mobility (250,000 cm 2 /Vs), a high thermal conductivity (5,000 W/mK ...
M. Frechette   +13 more
core   +1 more source

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