Optimization of dielectric loss in calcium copper titanate based on different doping modification strategies

With the development of electronic information technology, people have put forward more requirements for miniaturization and multifunctionality of electronic devices. Obtaining dielectric materials with good dielectric response is a research challenge. Calcium copper titanate (CCTO) ceramics have attracted widespread attention from researchers due to their high dielectric constant, good stability, and strong applicability. However, it has a significant dielectric loss, which limits its further development and application. Based on this, this paper systematically reviews the research progress of CCTO in terms of dielectric loss, focusing on the influence of different doping modification strategies on the dielectric loss characteristics. The selection of different sites, types, amounts, and properties of dopants has an important impact on dielectric loss, and controlling the grain size and grain boundary resistance can achieve low dielectric loss. The potential future development directions of CCTO mainly include the development of new doping strategies, research on doping modification mechanisms, and applications of materials in multiple fields. This work lays the foundation for the study of CCTO and its application in electronic devices, and is of great significance for the development of new materials and the improvement of their performance.