Results 41 to 50 of about 62,857 (189)

SYNTHESIS, PROPERTIES CaCu3Ti4O12 WITH COLOSSAL VALUE OF THE DIELECTRIC PERMITTIVITY

Ukrainian Chemistry Journal, 2019
Ceramic materials CaCu3Ti4O12 were synthesized by solid-phase reactions technique. The sequence of chemical reactions during the synthesis has been determined. Phase CaCu3Ti4O12 appears at 700 °C. At 800 – 900 °C, the intermediate phases CaTiO3, CuTiO3 and Ca3Ti2O7 are formed. Calcium and copper titanates, CaTiO3 and CuTiO3 interact to form CaCu3Ti4O12.
Boris Konchus, Oleg Yanchevskiy, Anatolii Belous, Oleg V'yunov   +3 more
openaire   +2 more sources

Microstructural Evolution and High-Performance Giant Dielectric Properties of Lu³⁺/Nb⁵⁺ Co-Doped TiO₂ Ceramics

Molecules, 2021
Giant dielectric (GD) oxides exhibiting extremely large dielectric permittivities (ε’ > 104) have been extensively studied because of their potential for use in passive electronic devices.
Noppakorn Thanamoon, Narong Chanlek, Pornjuk Srepusharawoot, Ekaphan Swatsitang, Prasit Thongbai   +4 more
doaj   +1 more source

CaCu3Ti4O12 ceramics from co-precipitation method: Dielectric properties of pellets and thick films [PDF]

, 2009
Dielectric properties of CaCu3Ti4O12 (CCTO)-based ceramics and thick films (e ∼50m) prepared from powders synthesized by a soft chemistry method (co-precipitation) are presented and discussed.
Chartier, Thierry, Dutarde, E., Dutarde, Emmanuel, Rumeau, Axel, Lebey, Thierry, Guillemet-Fritsch, Sophie, Guillemet-Fritsch, S., Combettes, Céline, Rossignol, Fabrice, Barbier, Bertrand, Barbier, B.   +10 more
core   +1 more source

Novel titanium dioxide ceramics containing bismuth and antimony

Journal of Materiomics, 2017
Here, we developed one kind of novel TiO2 ceramics with colossal dielectric constant by chemical modifications (Bi3+ and Sb5+), and discussed the physical origin for giant dielectric constant.
Zhenwei Li, Jiagang Wu
doaj   +1 more source

Colossal relative permittivity and low dielectric loss in BaFe0.5Nb0.5O3 ceramics prepared by spark plasma sintering

Results in Physics, 2020
BaFe0.5Nb0.5O3 (BFN) ceramics has been prepared using a rapid process where the powder was synthesised using mechanical milling of the components then consolidated by spark plasma sintering (SPS) for 5 min at 1100 °C.
H. Mahfoz Kotb, Osama Saber, Mohamad M. Ahmad   +2 more
doaj   +1 more source

Origins of Giant Dielectric Properties with Low Loss Tangent in Rutile (Mg_1/3Ta_2/3)_0.01Ti_0.99O₂ Ceramic

Molecules, 2021
The Mg2+/Ta5+ codoped rutile TiO2 ceramic with a nominal composition (Mg1/3Ta2/3)0.01Ti0.99O2 was synthesized using a conventional solid-state reaction method and sintered at 1400 °C for 2 h.
Nateeporn Thongyong, Narong Chanlek, Pornjuk Srepusharawoot, Prasit Thongbai   +3 more
doaj   +1 more source

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 ...
Hu, Wanbiao, Liu, Yun, Withers, Raymond, Frankcombe, Terry, Noren, Lasse, Snashall, Amanda, Kitchin, Melanie, Smith, Paul, Gong, Bill, Chen, Hua, Schiemer, Jason, Brink, Frank, Wong-Leung, Jennifer   +12 more
openaire   +5 more sources

Microwave Dielectric Materials with Defect-Dipole Clusters Induced Colossal Permittivity and Ultra-low Loss

, 2021
Microwave dielectric materials are of great interest due to their applications in communication technology. The intrinsically low dielectric permittivity (generally less than 100) of traditional microwave dielectric materials has limited their capability
Ŝaru̅nas Svirskas, Yun Liu, Hua Chen, Xiuhua Cao, Terry J. Frankcombe (1417471), Lilit Jacob, Nicholas Cox, Ju̅ras Banys, Zhenxiao Fu, Terry J. Frankcombe, Hua Chen (43790), Zhenxiao Fu (3901447), Julien Langley, Lilit Jacob (3998357), Shiwo Ta (11649299), Xiuhua Cao (10766405), Nicholas Cox (1498486), Ju̅ras Banys (1451851), Ŝaru̅nas Svirskas (11649302), Xiaoyong Wei (820465), Yun Liu (84346), Shiwo Ta, Julien Langley (8921957), Xiaoyong Wei, Jianmei Liu (4632793), Jianmei Liu   +25 more
core   +2 more sources

Origin of giant dielectric permittivity and weak ferromagnetic behavior in (1−x)LaFeO3−xBaTiO3 (0.0 ≤ x ≤ 0.25) solid solutions [PDF]

Journal of Advanced Dielectrics, 2016
The solid solutions of (1−x) LaFeO3–xBaTiO3 (0.0≤x≤0.25) have been synthesized successfully by the conventional solid-state reaction method. Room temperature (RT) X-ray diffraction studies reveal the stabilization of orthorhombic phase with Pbnm space ...
T. Sreenivasu, P. Tirupathi, K. Prabahar, B. Suryanarayana, K. Chandra Mouli   +4 more
doaj   +1 more source

Effects of Sintering Conditions on Giant Dielectric and Nonlinear Current–Voltage Properties of TiO₂-Excessive Na_1/2Y_1/2Cu₃Ti_4.1O₁₂ Ceramics

Molecules, 2022
The effects of the sintering conditions on the phase compositions, microstructure, electrical properties, and dielectric responses of TiO2-excessive Na1/2Y1/2Cu3Ti4.1O12 ceramics prepared by a solid-state reaction method were investigated.
Pariwat Saengvong, Jakkree Boonlakhorn, Narong Chanlek, Nutthakritta Phromviyo, Viyada Harnchana, Pairot Moontragoon, Pornjuk Srepusharawoot, Sriprajak Krongsuk, Prasit Thongbai   +8 more
doaj   +1 more source