Excitation wavelength-dependent emission characteristics of Eu³⁺ in Ba₂Mg(BO₃)₂.

Equally intense magnetic and electric dipole transitions under long wavelength excitations.

Predominant magnetic dipole transition when excited using Eu³⁺–O²⁻ charge transfer energy.

Atomic reorganization in the excited state changes the local site symmetry as evidenced by Eu³⁺ luminescent probe.

Eu³⁺ site symmetry changes from non-inversion to inversion symmetry in Ba₂Mg(BO₃)₂.