We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
High-Permittivity and Bias-Voltage-Insensitive (Ba,Sr,Ca)TiO 3 ·0.03(Bi 2 O 3 ·3TiO 2) Ceramics with Y5U Specification.
- Authors
Li, Wei; Yao, Zhonghua; Hao, Hua; Cao, Minghe; Liu, Hanxing
- Abstract
Class II ceramics are a material with high permittivity but low reliability of their capacitance and bias voltage due to high the temperature sensitivity of their dielectric permittivity. In this work, a BST-based (Ba0.9−xSrxCa0.1)TiO3·0.03(Bi2O3·3TiO2) (x = 0.2, 0.25, 0.3, 0.35, 0.4) composition with Y5U characteristics was investigated through compositional control to develop high-permittivity and voltage-stable ceramic compositions. Sr doping can increase the breakdown strength (Eb) but decreases the Curie temperature (Tc). The composition at x = 0.3 can obtain optimal comprehensive electrical properties, with high permittivity of 4206, low dielectric loss of ~0.009, and moderate breakdown strength (Eb) of 77.6 kV/cm, which meets Y5U specifications. Typically, a low bias-voltage dependence of capacitance is confirmed with a variation rate of 7.64% under 20 kV/cm. This strategy provides a promising candidate for high-permittivity Class II ceramic dielectrics that can be used in this field.
- Subjects
CERAMIC materials; CERAMICS; CURIE temperature; ALKALINE earth metals; DIELECTRICS; LEAD-free ceramics; DIELECTRIC loss; ELECTRIC breakdown
- Publication
Crystals (2073-4352), 2023, Vol 13, Issue 12, p1627
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst13121627