Dielectric properties of Bi-Doped BaTiO3-based ceramics synthesized by liquid-state method

Abstract

A liquid-state method was used in this work to produce Bi-BaTiO 3 materials. The dielectric properties of the samples were measured by a LCR meter. With increasing Bi content, the Multilayer ceramic capacitors display a stronger performance in its dielectric behavior. The best dielectric properties was obtained in the composition x = 0.02 with ε = 17561. The dielectric strength of the ceramics was measured by a withstanding voltage tester. The best dielectric strength was achieved in the comp+osition x = 0.02 with E = 4.545 kV mm -1 .

Bi2O3-Modified Ceramics Based on BaTiO3 Powder Synthesized in Water Vapor

“…As reported earlier, the use of Bi 2 O 3 additive to BaTiO 3 powder promoted ceramic densification owing to liquid phase formation during the sintering [23][24][25]. Bi 3+ ion is known to substitute aliovalently Ba 2+ in a perovskite lattice because of similar ionic radii (0.145 and 0.160 nm, respectively) [18,[23][24][25][26][27]. The solubility limit of Bi 3+ in BaTiO 3 was reported to reach 5 at % [28].…”

“…One of the typical modifications of BaTiO 3 ceramics is incorporation of Bi 3+ ions [16][17][18][19][20][21][22]. As reported earlier, the use of Bi 2 O 3 additive to BaTiO 3 powder promoted ceramic densification owing to liquid phase formation during the sintering [23][24][25]. Bi 3+ ion is known to substitute aliovalently Ba 2+ in a perovskite lattice because of similar ionic radii (0.145 and 0.160 nm, respectively) [18,[23][24][25][26][27].…”

Tailoring the Shape, Size, Crystal Structure, and Preferential Growth Orientation of BaTiO3 Plates Synthesized through a Topochemical Conversion Process

“…It was shown by several authors that a low content of bismuth does not cause a deterioration of the functional properties. In the study of Wang et al the best dielectric properties were obtained for the Ba 0.97 Bi 0.02 TiO 3 composition. Similarly, Maurya et al showed that a low content of bismuth in BaTiO 3 ceramics (Ba 0.975 Bi 0.025 TiO 3 ) enhanced its piezoelectric characteristics.…”