Neodyniumin

Neodyniumin is a hypothetical intermetallic compound consisting of neodymium (Nd) and indium (In). In speculative materials science and some science-fiction contexts, neodyniumin is described with stoichiometries such as NdIn or NdIn2 and is characterized by a metallic bonding framework that couples Nd's magnetic moments with indium's electron structure.

Crystal-structure models suggest possible tetragonal or orthorhombic lattices, with predicted high magnetic anisotropy and metallic conductivity. The calculated density might lie in the 7–12 g/cm3 range, depending on the exact composition.

No experimental synthesis or natural occurrence has been documented, and no verified minerals matching neodyniumin are known.

In theory, formation could require high-temperature alloying of neodymium and indium, followed by controlled cooling or rapid quenching, but stabilizing Nd-In intermetallics pose challenges due to Nd's reactivity and indium's low melting point.

As a topic of speculation, neodyniumin is discussed in theoretical studies and fiction as a potential component in future magnets or spintronic devices, though it remains unrealized in practice.

See also: neodymium, indium, intermetallic compound.