Multifunctional Properties and Potential Applications of Prussian Blue Analogue Magnets

PBAs (Prussian blue analogues), a fascinating class of open framework-based magnetic materials, have garnered significant attention due to their versatile crystal structure and multifunctional properties. This review article provides in-depth insight into the relationship between the unique crystal structure of PBAs and their diverse magnetic properties, such as magnetic ordering, the magnetocaloric effect, and the magnetization reversal phenomenon. The importance of the neutron scattering probe to understand the local structural disorder in PBAs is discussed in highlighting structure– (magnetic) property relations. Examples on the tuning of magnetic ordering temperature by optimizing composition through alkali metal ion insertion or by designing a core/shell type structure which promotes the magnetic proximity effect are reviewed. Besides, the electrochemical properties of PBAs, suitable for energy storage solutions, including batteries and supercapacitors, are addressed. The review also examines the usefulness of PBAs in hydrogen storage, radioactive waste management, and advanced memory devices, such as magnetic random-access memory (MRAM). Additionally, the integration of PBAs into graphene devices for spintronics and energy storage applications further highlights their potential in various technological domains. In conclusion, the remarkable versatility in structure–property relations and promising applications of PBAs offer exciting prospects for future research and development and underscore their significance in advancing materials science and technology.