Results 51 to 60 of about 62,857 (189)

Origins of high–performance giant dielectric properties in TiO2 co-doped with aliovalent ions via broadband dielectric spectroscopy

Results in Physics, 2023
(Zn1/3Ta2/3)xTi1-xO2 ceramics with x  = 0.01 (ZnTTO-1 %) and x  = 0.1 (ZnTTO-10 %) were prepared by a solid-state reaction method. Remarkably, the ZnTTO-1 % and ZnTTO-10 % ceramics sintered at 1500 °C for 2 h showed a high dielectric permittivity of ...
Nateeporn Thongyong, Narong Chanlek, Masaki Takesada, Prasit Thongbai   +3 more
doaj   +1 more source

Dielectric properties of CaCu3Ti4O12 based multiphased ceramics [PDF]

, 2006
A “soft chemistry” method, the coprecipitation, has been used to synthesize the perovskite CaCu3Ti4O12 (CCT). Three main types of materials were obtained for both powders and sintered ceramics: a monophased consisting of the pure CCT phase, a biphased ...
Durand, Bernard, Lebey, Thierry, Boulos, Madona, Guillemet-Fritsch, Sophie, Guillemet, Sophie   +4 more
core   +1 more source

Hydrogenation shrinks the colossal permittivity of Sb/Co co-doped TiO

, 2023
Pristine and (Sb/Co)-codoped TiO2 anatase powders were synthesized by hydrothermal method and some of the samples were hydrogenated. The samples were characterized by the traditional techniques: X-rays, optical diffuse reflection spectroscopy (DRS), and ...
Aqeel A. Dakhel
core   +1 more source

The Primary Origin of Excellent Dielectric Properties of (Co, Nb) Co-Doped TiO₂ Ceramics: Electron-Pinned Defect Dipoles vs. Internal Barrier Layer Capacitor Effect

Molecules, 2021
(Co, Nb) co-doped rutile TiO2 (CoNTO) nanoparticles with low dopant concentrations were prepared using a wet chemistry method. A pure rutile TiO2 phase with a dense microstructure and homogeneous dispersion of the dopants was obtained.
Theeranuch Nachaithong, Narong Chanlek, Pairot Moontragoon, Prasit Thongbai   +3 more
doaj   +1 more source

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

Low‐Field Giant Dielectric Tunability by Polaron‐Mediated Interfacial Polarization in Pulsed‐Laser‐Deposited‐Nanocrystalline/Amorphous Composite BaTiO3 Thin Films

Advanced Electronic Materials, EarlyView.
Comparison of tunability efficiency between vacuum‐deposited PLD‐BTO films grown at Td = 550°C in the present study and representative previous reports. ABSTRACT Electrically tunable dielectric thin films are essential components for next‐generation low‐voltage electronic devices.
Shinya Kondo, Taichi Murakami, Loick Pichon, Joël Leblanc‐Lavoie, Takashi Teranishi, Akira Kishimoto, Tomoaki Yamada, My Ali El Khakani   +7 more
wiley   +1 more source

Colossal and frequency stable permittivity of barium titanate nanoceramics derived from mechanical activation and SPS sintering [PDF]

, 2015
Highly dense barium titanate nanoceramics have been successfully prepared via a mechanical activation synthesis method and Spark Plasma sintering. Attractive electrical properties have been evidenced in these materials: a colossal permittivity, (3.5. 105)
Al-Naboulsi, Tawfik, Zakhour, Mirvat, Dufour, Pascal, Tenailleau, Christophe, Boulos, Madona, Guillemet-Fritsch, Sophie   +5 more
core   +1 more source

Potential barrier engineered colossal permittivity CaCu3Ti4O12 ceramics with largely reduced dielectric loss

Journal of Materiomics
CaCu3Ti4O12 (CCTO) ceramics exhibit a colossal permittivity response and good stability across wide temperature and frequency ranges, and play an indispensable role in microelectronic devices and energy storage applications.
Huimin Feng, Pu Mao, Jie Sun, Ting Wang, Gerhard Marthin Shimoshili, Yahui Tian, Zhiyong Liu, Bing Xie, Kun Guo, Jinghui Gao   +9 more
doaj   +1 more source

Perovskite‐Based Catalysts for the Oxygen Evolution Reaction: Synthesis, Device Relevant Performance, and Scale‐Up Strategies

Small, Volume 22, Issue 61, 2 November 2026.
Perovskites are emerging as catalysts for acidic oxygen evolution in proton exchange membrane water electrolyzers. This manuscript focuses on catalyst behavior under device‐relevant conditions, highlighting surface reconstruction, elemental utilization, and membrane electrode assembly performance. By linking materials design with electrolyzer operation,
Jala Bib Khan, Norbert Kazamer, Marco Brand, Tim Hülser, Clemens Pollerberg, Ulrich Rost   +5 more
wiley   +1 more source

Dielectric relaxations and low dissipation factor with excellent temperature stability of Ti1-x(Co1/3Ta2/3)xO2 ceramics

Results in Physics, 2023
Low dissipation factor (tanδ) and excellent temperature stability of high dielectric permittivity are obtained in Ti1-x(Co1/3Ta2/3)xO2 ceramics, which were prepared using a mixed oxide method.
Theeranuch Nachaithong, Narong Chanlek, Pairot Moontragoon, Pornjuk Srepusharawoot, Prasit Thongbai   +4 more
doaj   +1 more source