Niobium-based superconductors is a research domain within condensed matter physics and materials science dedicated to the study, development, and application of superconducting materials primarily composed of niobium or its alloys and compounds. This field investigates the synthesis, crystallographic structure, and fundamental superconducting properties—including critical temperature, critical magnetic field, and critical current density—of these materials. Key characteristics include their ability to sustain superconductivity at high magnetic fields and moderately high temperatures, particularly in technologically significant forms like niobium-titanium (NbTi) and niobium-tin (Nb₃Sn). The significance of this research lies in the widespread use of niobium-based superconductors as the foundational materials for generating intense magnetic fields in critical technologies such as particle accelerators, magnetic resonance imaging (MRI) systems, and superconducting magnets for fusion energy confinement.