Results 71 to 80 of about 62,857 (189)

Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics

, 2020
In this study, a colossal permittivity up to 3800 and a low dielectric loss of 0.11 at 1 kHz have been obtained from the (Li, In) co-doped ZnO ceramic [Zn(1−2x)(Li, In)xO] when x was 0.5%. Electric modulus spectroscopy and impedance analysis were used to
Li, Yongxiang, Liu, Zhifu, Huang, Dong, Liu, Yun   +3 more
core   +1 more source

Grain Growth-Controlled Giant Permittivity in Soft Chemistry CaCu3Ti4O12 Ceramics [PDF]

, 2007
We report a dielectric constant of up to 5.4105 at room temperature and 1 kHz for CaCu3Ti4O12 (CCTO) ceramics, derived from multiphase powders (coprecipitation products), made by a ‘‘chimie douce’’ (coprecipitation) method, and then sintered in air.
Durand, Bernard, Levchenko, Andrey A., Lebey, Thierry, Marchin, Loïc, Guillemet, Sophie, Navrotsky, Alexandra   +5 more
core   +1 more source

The Fundamental Mechanism Behind Colossal Permittivity in Oxides (dataset)

, 2019
The POSCAR structure files for the interface structures relaxed and calculated for this paper.The article associated with this dataset is located in ORE at: http://hdl.handle.net/10871/39298This is the dataset used for the Taylor et al.
CJ Price (21832004), SP Hepplestone (21843203), SG Davies (7776137), NT Taylor (21873797), FH Davies (21873800)   +4 more
core   +1 more source

Discovery of an Ideal HgO12 Icosahedron and Magnetodielectric Coupling in HgCu3Ti4O12

Advanced Electronic Materials, Volume 12, Issue 12, 22 June 2026.
HgCu3Ti4O12, an A‐site‐ordered quadruple perovskite with a perfectly regular HgO12 coordination, has been synthesized for the first time using high‐pressure methods. The material shows antiferromagnetic ordering at 31 K together with an intrinsic dielectric anomaly, implying possible magnetodielectric coupling.
Haoyu Zheng, Jianfa Zhao, Jun Deng, Lei Duan, Xudong Shen, Zhiwei Hu, Luchuan Shi, Yuling Dai, Xiaoming Chen, Xubin Ye, Jun Zhang, Wenmin Li, Zheng Deng, Xiancheng Wang, Chang‐Yang Kuo, Chien‐Te Chen, Youwen Long, Runze Yu, Changjiang Xiao, Changqing Jin   +19 more
wiley   +1 more source

Enhanced dielectric properties of Sr2+ and Zr4+ doped BaTiO3 colossal permittivity metamaterials

EPJ Applied Metamaterials
BaTiO3, as one of the most important functional materials of perovskite structure, is widely used in the electronic industry. However, the dielectric permittivity of BaTiO3 remains relatively low, which greatly limits its practical application in ...
Tang Qingyang, Shi Zhicheng, Xia Shuimiao, Bie Xiaohan, Yang Yujie, Bian Dedong, Xu Daofeng, Fan Runhua   +7 more
doaj   +1 more source

Point defect structure of La-doped SrTiO3 ceramics with colossal permittivity [PDF]

, 2018
Sr1-xLaxTiO3 (SLTO) ceramics with colossal permittivity were fabricated by conventional solid-state reaction method. The point defects of pure STO and SLTO ceramics were analyzed by Positron Annihilation Lifetime Spectroscopy (PALS) and Coincidence ...
Cizek, J, Yang, S, Dong, G, Qin, M, Xu, J, YAN, H, REECE, M, Fan, X, Zhao, L, Gao, F   +9 more
core   +1 more source

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

Advanced Functional Materials, Volume 36, Issue 43, 29 May 2026.
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

Colossal permittivity with ultralow dielectric loss in In + Ta co-doped rutile TiO₂

, 2017
Electron-pinned defect dipoles, in the form of highly stable triangle-diamond and/or triangle-linear dopant defect clusters with well defined relative positions for Ti reduction, are present in rutile In + Ta co-doped TiO2 for the colossal permittivity ...
Wen Dong, Dehong Chen, Yongxiang Li, Ray L. Withers, Yun Liu, Chao Zhou, Ladir Cândido, Zhenxiao Fu, Wanbiao Hu, Hua Chen, Terry J. Frankcombe, Guoqiang Hai   +11 more
core   +1 more source

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

Advanced Materials, Volume 38, Issue 16, 17 March 2026.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li, Yanran Liu, Jinjin Liu, Josephine Si Yu See, Kaijian Xing, Dong‐Chen Qi, Xiao Renshaw Wang   +6 more
wiley   +1 more source

Colossal dielectric permittivity of BaTiO3-based nanocrystalline ceramics sintered by spark plasma sintering [PDF]

, 2009
In pursuit of high permittivity materials for electronic application, there has been a considerable interest recently in the dielectric properties of various perovskite oxides like calcium copper titanate or lanthanum doped barium titanate.
Durand, Bernard, Tenailleau, Christophe, Lebey, Thierry, Valdez Nava, Zarel, Guillemet, Sophie, Chane-Ching, Jean-Yves, Guillemet-Fritsch, Sophie   +6 more
core   +1 more source