Usage of P-V-L Bond Theory in Regulating Properties of Microwave Dielectric Ceramics

doi:10.15541/jim20240450

Abstract

Abstract: The rapid development of communication technology has put forward increasingly stringent requirements on dielectric ceramic filters. The efficient design of novel dielectric materials to facilitate their progression is of great significance. The relationship between the structure and performance of materials is crucial to the synthesis and design of microwave dielectric ceramics. The P-V-L bond theory aims to provide crystal structure parameters and basic chemical bond characteristics through calculations, such as the bond ionicity, bond covalency, bond sensitivity, lattice energy, bond energy, etc. These parameters provide a theoretical basis and guidance for the modification design of microwave dielectric ceramics. In recent years, researchers have been committed to applying the P-V-L bond theory to a large number of ceramic systems to explain the relationship between the structure and performance of microwave dielectric ceramics. Baed on this theory, new modification strategies have been proposed to obtain excellent microwave dielectric properties. This review provides a comprehensive overview of the fundamental concepts of the P-V-L bond theory and the binary bonding formula of complex polycrystals, and outlines the methods of calculating chemical bond parameters and chemical bond characteristics in the field of microwave dielectric ceramics. At the same time, the application of the P-V-L bond theory in several common microwave dielectric ceramic systems in recent years is analyzed. The results show that the P-V-L bond theory analysis can provide the bond characteristics in ion-doped modified systems, as well as the structural evolution and dielectric properties. This understanding is highly significant for guiding the development and application direction of microwave dielectric ceramics.

Key words: microwave dielectric ceramics, crystal structure, P-V-L bond theory, application, review

CLC Number:

TQ174

HU Zhichao, YANG Hongyu, YANG Hongcheng, SUN Chengli, YANG Jun, LI Enzhu. Usage of P-V-L Bond Theory in Regulating Properties of Microwave Dielectric Ceramics[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20240450.

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