Orthorhombic (NH₄,Li)Eu(MoO₄)₂ Solid Solution: Crystal Structure and Red-Emitting Photoluminescence.

ABSTRACT: A novel orthorhombic polymorph of (NH₄,Li)Eu(MoO₄)₂ enabled by partial substitution of NH₄ with Li was synthesized via a one-pot low-temperature hydrothermal route using a Li/NH₄ precursor solution. Synchrotron X-ray powder diffraction and Rietveld refinement confirmed that this phase crystallizes in an orthorhombic lattice, representing a new structure type distinct from the known triclinic and tetragonal phases (P1 and I4₁/a space groups). Under UV excitation, the orthorhombic ((NH₄)_1-xLi_x)Eu(MoO₄)₂ (x = 0.074-0.172) with Pbcn space group exhibits intense red photoluminescence. The emission spectrum shows multiple sharp

SUBMITTER: Hasegawa T 

PROVIDER: S-EPMC12406182 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature