Colossal permittivity in high-entropy CaTiO3 ceramics by chemical bonding engineering [PDF]
Nature CommunicationsDielectrics with high permittivity, low dielectric loss, and good temperature stability are crucial for electronic components to meet the ever-increasing application demands.
Jinghan Cai +5 more
doaj +5 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.
Zhenzhu Cao
exaly +5 more sources
The Fundamental Mechanism Behind Colossal Permittivity in Oxides [PDF]
Advanced Materials, 2019 AbstractColossal permittivity materials exhibit extreme polarization in an applied electric field, providing applications in electronics and energy transmission. Understanding the atomic‐scale mechanism behind colossal permittivity remains a challenging task and is key to optimizing materials with this property.
Conor Jason Price +2 more
exaly +4 more sources
The impact of lanthanum doping on the microstructure and colossal permittivity in BaxSr(1-x)TiO3 [PDF]
Open Ceramics, 2021 In this work BaSrTiO3 with three different Ba/Sr (45/55, 55/45 and 65/35) ratios and lanthanum doping concentrations of 0, 0.2, 0.4 and 0.6 mol.% were studied. Samples were fabricated through the mixed oxide route.
Kari Nurmi, Heli Jantunen, Jari Juuti
doaj +2 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
Conduction mechanism investigation in YCa2Cu3Oδ colossal permittivity ceramics
Results in PhysicsSol-gel synthesized YCa2Cu3Oδ ceramic exhibits giant permittivity εr′≈104, low loss tanδ0.3, and high stability over frequency and temperature. XRD revealed a tetragonal phase (P4/mmm). XPS confirmed high oxygen vacancy density.
Wael Chouk +2 more
doaj +3 more sources
Understanding the role of electrons in the magnetism of a colossal permittivity dielectric material [PDF]
Materials Horizons, 2020 Evidence for magnetic order at room temperature in a colossal permittivity dielectric indicates a potential for the development of magneto-electronic devices.
Adam Berlie +4 more
openaire +2 more sources
Colossal permittivity and ultralow dielectric loss in Nb-doped SrTiO3 ceramics
Journal of Advanced Ceramics, 2023 Defect engineering has been applied to prepare materials with modifiable dielectric properties. SrTiNbxO3 (x = 0, 0.003, 0.006, 0.009, 0.012) ceramics were synthesized using the traditional solid-state reaction method and sintered in a reducing ...
Jinghan Cai +4 more
doaj +1 more source
Dielectric properties of colossal permittivity materials: An update [PDF]
2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2011 During the last 10 years, a lot of interests have been devoted to the so-called CDC (colossal dielectric constant) materials. The first materials exhibiting this behavior were the perovskite-based ceramics on the CCTO (CaCu3Ti4O12) composition. Relative dielectric permittivity can attain values up to (or even larger than) 105.
Cheballah, Chafé +6 more
openaire +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 +1 more source