Effect of (Ba+Sr/Ti) ratio on the dielectric properties for highly (111) oriented (Ba,Sr)TiO3 thin films

Effects of Ultrathin TiOx Seeding Layer on Crystalline Orientation and Electrical Properties of Sputtered (Ba,Sr)TiO3 Thin Films

“…This value is comparable to that of (111)‐textured BST films with a 10‐nm‐thick MgO buffer layer (30%, at 300 kV/cm) 8 and to that of polycrystalline BST films (28%, at 237 kV/cm) 16 . These results are consistent with XRD and SEM analyses, as the dielectric properties of BST films are profoundly affected by the crystallinity, microstructure, and preferred orientation 17,18 . The hysteresis effects (butterfly curves), which are ascribed to some local ferroelectric domains that existed in films 19 or induced by the dead interface layer for the BST films, should be mentioned.…”

Structural, electrical and piezoelectric properties of nanocrystalline tin-substituted barium titanate ceramics

“…By adding suitable dopants to BT, interesting characteristics for various applications can be obtained [4][5][6]. The electrical and dielectric properties of BT can be modified by doping with various isovalent cations on both A(Ba) and B(Ti) sites [7][8][9]. The A site dopants such as Sr 2+ are effective in displacing or shifting the Curie temperature but have little effect on dielectric maximum [7].…”

“…The electrical and dielectric properties of BT can be modified by doping with various isovalent cations on both A(Ba) and B(Ti) sites [7][8][9]. The A site dopants such as Sr 2+ are effective in displacing or shifting the Curie temperature but have little effect on dielectric maximum [7]. However the addition of cations on the B site such as Zr 4+ has significant effect on dielectric maximum [8,9].…”

MICROSTRUCTURE AND FERROELECTRIC PROPERTIES OF BaZr0.2Ti0.8O3 FILMS PREPARED BY SOL-GEL

“…(BST) has high dielectric constant, low leakage current and low dissipation factor [1][2][3]. However, the leakage current often abruptly turns up in orders of magnitude as the applied field exceeds a critical value of several hundreds kV/cm, and breakdown occurs at a field around 2MV/cm [2,4].…”