Novel SrTiO3-based ceramics with colossal permittivity, low dielectric loss, and high insulation resistivity via defect engineering

The origin of dielectric relaxation behavior in TiO2 based ceramics co-doped with Zn2+, W6+ ions under a N2/O2 sintering atmosphere

“…21,47 The other g = 2.005 is approximately the g values of trapping electrons or holes and confirms the existence of defect dipoles . 48,49 These results further explained that dielectric relaxation in the region of high temperature originated from the disassociation between oxygen vacancies and trivalent titanium ions in ZWTO x -N 2 ceramics. X-ray photoemission spectroscopy (XPS) was used to detect valence states of different elements in ZWTO x -N 2 ceramics.…”

Effect of MnO on the Dielectric Properties of Nb-SrTiO3 Ceramics for Capacitor Applications

“…The strategy of defect engineering was already adopted to improve the performance of STO. , The incorporation of ions, such as Nb or Mn in the STO matrix, leads to defect reactions. It has been shown that the introduction of Nb 5+ for host Ti 4+ leads to the electronic compensation, increases the permittivity, and changes the resistivity. , However, this point can be changed depending on the sintering atmosphere used .…”

High insulation resistivity and low dielectric loss in (Ta, Al)‐codoped BaTiO3 colossal permittivity materials

“…Selection of suitable matrix materials to construct defect dipoles is the key to achieve high insulating properties 13–17 . Although the A‐site‐doped SrTiO 3 ‐based giant dielectric ceramics prepared based on the electron pinning defect dipole (EPDD) effects mechanism obtained high insulating properties ( ρ v > 10 8 ), their high sintering temperatures and rough grain sizes (>1450°C and 10 µm) limit their practical applications 13–16 .…”

“…[8][9][10][11][12] Selection of suitable matrix materials to construct defect dipoles is the key to achieve high insulating properties. [13][14][15][16][17] Although the A-site-doped SrTiO 3 -based giant dielectric ceramics prepared based on the electron pinning defect dipole (EPDD) effects mechanism obtained high insulating properties (ρ v > 10 8 ), their high sintering temperatures and rough grain sizes (>1450 • C and 10 µm) limit their practical applications. [13][14][15][16] Notably, BaTiO 3 -based dielectric materials with high voltage resistance and insulating properties have been a hot topic in the research of high dielectric constant materials, applying widely as important matrix materials for MLCC capacitors.…”

“…[13][14][15][16][17] Although the A-site-doped SrTiO 3 -based giant dielectric ceramics prepared based on the electron pinning defect dipole (EPDD) effects mechanism obtained high insulating properties (ρ v > 10 8 ), their high sintering temperatures and rough grain sizes (>1450 • C and 10 µm) limit their practical applications. [13][14][15][16] Notably, BaTiO 3 -based dielectric materials with high voltage resistance and insulating properties have been a hot topic in the research of high dielectric constant materials, applying widely as important matrix materials for MLCC capacitors. [17][18][19] Based on the electron pinning effect, modified BaTiO 3 ceramics have increasingly gained attention in the field of the investigation of giant dielectric constants and a few studies have been reported.…”