On problems of search for novel Bi-containing layered perovskite-like high-Tc ferroelectrics

Study on high temperature performances for bismuth layer-structured (Sr1−xCax)2Bi4Ti5O18 (0≤x≤1) ceramics

“…Because of the high Curie temperature, bismuth layerstructured ferroelectrics (BLSFs) ceramics can be used to manufacture piezoelectric devices under high temperature [1][2][3]. Also, the BLSFs have many other excellent features, such as stronger anisotropic electromechanical coupling factors, low aging rate and low dielectric dissipation factors.…”

Processing and dielectric properties of Bi4Srn−3TinO3n+3 (n=3, 4 and 5) ceramics obtained from mechanochemically activated precursors

“…2 The Aurivillius-phases can be described as a regular stacking of (Bi 2 O 2 ) 2+ slabs and perovskite (A n+1 B n O 3n+1 ) 2− blocks. The position A is generally occupied by an alkaline, alkaline-earth and rare-earth metal, B by a d 0 transition element and n represents the number of BO 6 octahedra between two Bi 2 O 2 layers.…”

Influence of the mechanochemical conditions on the processing of Bi4SrTi4O15 ceramics from submicronic powdered precursors

“…This Aurivillius family is well known for its ferroelectric behavior at high temperatures because it usually presents a Curie temperature above 500 • C [3,4].…”

“…Different initial reagents, milling devices and times were considered. SrCO 3 and SrO have been used as initial reagents. Microstructure and the dielectric and piezoelectric properties of Bi 4 SrTi 4 O 15 ceramics were studied.…”