Results 1 to 10 of about 310 (148)

Colossal permittivity in high-entropy CaTiO3 ceramics by chemical bonding engineering [PDF]

Nature Communications
Dielectrics with high permittivity, low dielectric loss, and good temperature stability are crucial for electronic components to meet the ever-increasing application demands.
Jinghan Cai, Shun Lan, Bin Wei, Junlei Qi, Ce-Wen Nan, Yuan-Hua Lin   +5 more
doaj   +4 more sources

Colossal Permittivity Characteristics of (Nb, Si) Co-Doped TiO₂ Ceramics. [PDF]

Materials (Basel), 2022
(Nb5+, Si4+) co-doped TiO2 (NSTO) ceramics with the compositions (Nb0.5Si0.5)xTi1−xO2, x = 0, 0.025, 0.050 and 0.1 were prepared with a solid-state reaction technique. X-ray diffraction (XRD) patterns and Raman spectra confirmed that the tetragonal rutile is the main phase in all the ceramics.
Kotb HM, Alshoaibi A, Mazher J, Shaalan NM, Ahmad MM.   +4 more
europepmc   +3 more sources

Permittivity boosting by induced strain from local doping in titanates from first principles [PDF]

Scientific Reports, 2023
We examine the effect of isovalent substitutions and co-doping on the ionic dielectric constant of paraelectric titanates (perovskite, Ruddlesden-Popper phases, and rutile) using density functional perturbation theory.
Alex Kutana, Yuho Shimano, Ryoji Asahi
doaj   +2 more sources

Colossal permittivity and multiple effects in (Zn + Ta) codoped TiO2 ceramics [PDF]

Journal of Asian Ceramic Societies, 2020
Colossal permittivity (CP) materials are potential for the important applications of device miniaturization and energy storage. In this work, (Zn2+1/3Ta5+2/3)xTi1-xO2 ceramics were fabricated by conventional solid-state method.
Jiangtao Fan, Tiantian Yang, Zhenzhu Cao
doaj   +4 more sources

Effects of Charge Compensation on Colossal Permittivity and Electrical Properties of Grain Boundary of CaCu₃Ti₄O₁₂ Ceramics Substituted by Al³⁺ and Ta⁵⁺/Nb⁵⁺ [PDF]

Molecules, 2021
The effects of charge compensation on dielectric and electrical properties of CaCu3Ti4-x(Al1/2Ta1/4Nb1/4)xO12 ceramics (x = 0−0.05) prepared by a solid-state reaction method were studied based on the configuration of defect dipoles.
Jakkree Boonlakhorn, Jedsada Manyam, Pornjuk Srepusharawoot, Sriprajak Krongsuk, Prasit Thongbai   +4 more
doaj   +2 more sources

High dielectric performance and multifarious polarizations in (Lu + Ta) co-doped TiO2 ceramics

Journal of Asian Ceramic Societies, 2021
Materials with high dielectric constant have broad application prospects in energy storage elements. In this work, (Lu0.5Ta0.5)xTi1-xO2 ceramics (x = 0, 0.01, 0.02 and 0.04) were synthesized by a standard conventional solid-state reaction.
Jiangtao Fan, Zhen Long, Zhanggui Hu
doaj   +2 more sources

Optimization of low sintering temperature for colossal permittivity and humidity resistance in TiO2 based ceramics [PDF]

Scientific Reports
This study investigates the colossal permittivity (CP) and humidity resistance of (Sn1/2Nb1/2)0.025Ti0.975O2 ceramics. Increasing the sintering temperature enhanced both density and grain growth, with the fine–grained structure proving essential for ...
Yasumin Mingmuang, Narong Chanlek, Masaki Takesada, Ekaphan Swatsitang, Prasit Thongbai   +4 more
doaj   +2 more sources

Electron-pinned defect-dipoles for high-performance colossal permittivity materials

Nature Materials, 2013
The immense potential of colossal permittivity (CP) materials for use in modern microelectronics as well as for high-energy-density storage applications has propelled much recent research and development. Despite the discovery of several new classes of CP materials, the development of such materials with the required high performance is still a highly ...
Wanbiao Hu, Yun Liu, Ray L Withers
exaly   +4 more sources

Low sintering temperature enhancing colossal dielectric permittivity and humidity sensitivity in Ta5+ substituted TiO2 ceramics via high energy ball milling [PDF]

Scientific Reports
Nanostructured 1% and 10% Ta5⁺-substituted TiO2 (TTO) ceramics were synthesized via high-energy ball milling and sintered at 1200 °C and 1300 °C to investigate their dielectric and humidity sensing performance.
Chotchaya Phianjing, Nutthakritta Phromviyo, Navadecho Chankhunthod, Pornjuk Srepusharawoot, Pairot Moontragoon, Prasit Thongbai   +5 more
doaj   +2 more sources

Colossal permittivity and humidity sensing properties of CaCu3Ti4O12 ceramics derived from cockle shell CaCO3 via CO2 absorption [PDF]

Scientific Reports
Cockle shells served as a sustainable and non-toxic calcium source for CO2 capture through carbonation–calcination cycles. In this study, CaCO3 derived from cockle shells was used to synthesize CaCu3Ti4O12 (CCTO) ceramics via the solid-state reaction ...
Kaniknun Sreejivungsa, Suppanat Kosolwattana, Morakot Sakulsombat, Prasit Thongbai   +3 more
doaj   +2 more sources