Used in the production of dysprosium metal through electrolysis or reduction processes, which is essential for doping neodymium-iron-boron (NdFeB) permanent magnets to enhance their high-temperature performance and resistance to demagnetization. These magnets are critical components in electric vehicle motors, wind turbine generators, hard disk drives, and various advanced electronic devices due to their strong magnetic properties at elevated temperatures. Also serves as a dopant in solid-state devices and in research for developing new luminescent materials, photonics, optical coatings, lasers, and displays requiring specific wavelengths. Plays a role in nuclear reactor control rods because of dysprosium's high neutron absorption capability. Commonly used in laboratories as a precursor for synthesizing other dysprosium-containing compounds, including studies of spin behavior in low-temperature quantum magnetic systems.