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Petersen
As-F-N-O-S
Al-Mn-Na-O-Si
As-Cu-F-N-O-S
B-F-N-O-S
F-N-O-S-Sb
structural properties
optical properties
phonons
wavenumber of optical phonon
phase transitions
chalcogen
transitional
metalloid
pnictogen
halogen
cubic
monoclinic
tetragonal
hexagonal
trigonal