Fig. 1: X-ray diffraction (XRD) patterns of the samples synthesized with the three precursor salts.
From: Rare earth metals production using alternative feedstock that eliminates HF

The diffraction pattern for the sample synthesized using the acetate precursor, i.e., NNF-A, comprised of a single α-NaNdF4 phase (denoted with a diamond symbol). The NNF-C and NNF-N samples (synthesized using the chloride and nitrate precursors, respectively) had two phases corresponding to α-NaNdF4 and NdF3 (denoted with a solid square symbol) phases.