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Keywords:

  • arsenic;
  • metastable phases;
  • phase formation;
  • phosphorus;
  • solid-state structures
Thumbnail image of graphical abstract

Back in black: All metastable and stable phases can be identified for the solid solution arsenic/phosphorus by a combination of quantum-chemical calculations and investigations of the phase formation. Reaction paths for phase formations and transitions in situ were also evaluated. The results show that orthorhombic black arsenic (o-As) is metastable in pure form and has only been previously obtained by stabilizing impurities.