Abstract:

Rare earth elements are a series of 17 elements including scandium, yttrium and lanthanide. They not only have physical and chemical similarities in nature, but also have their own unique and diverse electronic structures. From the chemical level, the characteristics of rare earth ions determine the nature of high-tech applications, such as rare earth permanent magnet, magnetic cooling, superconductivity, pyroelectricity, optical refrigeration, nonlinear optics, catalysis, etc. Rare earth functional materials are the basis for the application of these technologies. In terms of the requirements of scientific and technological development, the research and development of rare earth functional materials is the most important way to achieve high-quality development of rare earth resources. In this paper, based on the characteristics of rare earth ions, the orbital hybrid model is used to construct the basic relationship between rare earth ions and rare earth functional materials. The research progress of rare earth ions in composition design and performance optimization of rare earth functional materials in different application fields in recent years is summarized.

Key words: rare earth, rare earth ion characteristics, hybrid orbital model, rare earth functional materials