Results 31 to 40 of about 269 (146)

Effect of (Al/Ta) co-doped on dielectric properties of CdCu3Ti4O ceramics

Journal of Advanced Dielectrics
In this work, dense CdCu3(Al[Formula: see text]Ta[Formula: see text]Ti[Formula: see text]O[Formula: see text] ceramics were prepared by a conventional solid phase method. The effect of Al[Formula: see text]/Ta[Formula: see text] dopants on the dielectric
Huan Liu, Zhanhui Peng, Yulin Chen, Bi Chen, Di Wu, Lingling Wei, Pengfei Liang, Xiaolian Chao, Zupei Yang   +8 more
doaj   +1 more source

Hidden Bioavailable Dissolved Organic Matter in the Deep Northwestern Pacific Ocean

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The deep ocean is widely viewed as a stable reservoir of dissolved organic carbon (DOC) that is highly resistant to microbial degradation. However, this paradigm may be oversimplified. In a cross‐latitude survey conducted in the northwestern Pacific Ocean (155°E, 28.5°N–41.5°N), bulk DOC concentrations were found to be relatively constant ...
Yixian Li, Tao Liu, Xiaolin Li, Dalin Shi, Yuan Shen   +4 more
wiley   +1 more source

Impedance and AC conductivity study of nano crystalline, fine grained multiferroic bismuth ferrite (BiFeO3), synthesized by microwave sintering

AIP Advances, 2015
In this paper, major reduction in sintering time,temperautre and significant improvement over final density of sitnered sample is reported for the microwave sintered nanocrystalline BiFeO3 (BFO) ceramic.
Jayant Kolte, Paresh H. Salame, A. S. Daryapurkar, P. Gopalan   +3 more
doaj   +1 more source

A Review on Dielectric Materials and Composites: Polarisation Effects, Synthesis Methods and Applications

IET Nanodielectrics, Volume 9, Issue 1, January/December 2026.
(1) The review consolidates the importance of dielectric polarisation effects, dielectric parameters, synthesis methods, matrix–filler interactions and emerging applications based on dielectric composite materials. (2) The study provides a structured overview by identifying critical aspects of dielectric research, with emphasis on polarisation ...
Kiran Keshyagol, Shivashankarayya Hiremath, Vishwanatha HM, Pavan Hiremath   +3 more
wiley   +1 more source

The Fundamental Mechanism Behind Colossal Permittivity in Oxides

Advanced Materials, Volume 31, Issue 51, December 20, 2019., 2019
The atomic‐scale origin of colossal permittivity in CaCu3Ti4O12 is shown to be the result of a metallic interface between its grains and the intergrain material, CuxO. When under an applied electric field, interface charges respond by flowing within the grain edge, resulting in a large polarization of the electronic charge that gives rise to colossal ...
Ned T. Taylor, Francis H. Davies, Shane G. Davies, Conor J. Price, Steven P. Hepplestone   +4 more
wiley   +1 more source

Spontaneous Strain‐Spin Transition Coupling Molecular Crystal with Thermal Magnetic Memory Effect, Anisotropic High‐κ and Switchable Dielectric Permittivity

Advanced Science, Volume 12, Issue 33, September 4, 2025.
A radical salt undergoes a paraelastic‐ferroelastic phase transition, which is coupled with spin‐Peierls transition, resulting in it integrating self‐strain, spin bistability, switchable dielectric and high‐ properties. Abstract Materials that exhibit controllable changes in electrical, magnetic, or spontaneous strain properties, particularly those ...
Xuan‐Rong Chen, Zhang‐Ni He, Yin Qian, Wei Wei, Zheng‐Fang Tian, Xiao‐Ming Ren   +5 more
wiley   +1 more source

Weakly‐coupled barium titanate stannate‐based relaxors as energy storage materials

Journal of the American Ceramic Society, Volume 108, Issue 6, June 2025.
This study explores the development of lead‐free relaxor ferroelectrics, specifically (1−x)Ba(Ti0.93Sn0.07)O3−xBiYO3 (BTS7‐BY) solid solutions, which offer potential for high‐efficiency energy storage applications. By adjusting the BiYO3 content, we achieved a transition from ferroelectric to weakly‐coupled relaxor behavior, resulting in improved ...
Eva Kröll, Lara Devecioglu, Andrei N. Salak, Lukas Piotrowsky, Vladimir V. Shvartsman, Doru C. Lupascu   +5 more
wiley   +1 more source

The role of calcination temperature on enhancing the dielectric and optical properties of CaCu3Ti4O11.8Cl0.2 material

Results in Physics
The role of calcination temperature on phase stability and dielectric properties improvement of CaCu3Ti4O11.8Cl0.2 was studied. Analysis using optical properties indicated a redshift of the absorption peaks, while the band gap energy was decreased up to ...
Najwa Gouitaa, Fatima Zahra Ahjyaje, Taj-dine Lamcharfi, Jamal Houssaini, Mahjoub Daoudy, Farid Abdi   +5 more
doaj   +1 more source

Effect of substitution and processing on the morphology and dielectric properties of Pr2/3Cu3Ti4O12 (PCTO) ceramic

International Journal of Ceramic Engineering &Science, Volume 7, Issue 3, May 2025.
Meta stable non faceted and stable faceted morphologies observed in two processing conditions Metastable nonfacted and stable faceted morphologies observed in two processing conditions. Abstract Low‐cost, large dielectric constant, and resistivity materials have wide range of applications for radio frequency systems, flash memory devices to ...
Bradley Arnold, Ching Hua Su, Fow‐Sen Choa, Brian Cullum, Tagide deCarvalho, Narsimha S. Prasad, Lauren N. Gower, Anna C. Darden, Krishna S. Machuga, Narsingh Bahadur Singh   +9 more
wiley   +1 more source

Giant dielectric response and humidity sensing properties of Na1/2Bi1/2Cu3Ti4+xO12 ceramics

Next Materials
In this study, the influence of excess Ti content on the dielectric behavior and humidity sensing capability of Na1/2Bi1/2Cu3Ti4+xO12 ceramics (x = 0, 0.1, and 0.2) was investigated.
Pariwat Saengvong, Prasit Thongbai
doaj   +1 more source