Compositionally Graded Multilayer Ceramic Capacitors

TR Number
Date
2017-09-27
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Nature
Abstract

Multilayer ceramic capacitors (MLCC) are widely used in consumer electronics. Here, we provide a transformative method for achieving high dielectric response and tunability over a wide temperature range through design of compositionally graded multilayer (CGML) architecture. Compositionally graded MLCCs were found to exhibit enhanced dielectric tunability (70%) along with small dielectric losses (< 2.5%) over the required temperature ranges specified in the standard industrial classifications. The compositional grading resulted in generation of internal bias field which enhanced the tunability due to increased nonlinearity. The electric field tunability of MLCCs provides an important avenue for design of miniature filters and power converters.

Description
Keywords
effective pyroelectric coefficients, ferroelectric domain formation, high-temperature, computer-simulation, 0.9batio(3)-0.1(bi0.5na0.5)tio3 ceramics, dielectric-properties, behavior, field, batio3, films
Citation