A(5)RE(4)X[TO4](4) crystal growth and photoluminescence. Fluoride flux synthesis of sodium and potassium rare earth silicate oxyfluorides

作者：Latshaw Allison M^*; Wilkins Branford O; Hughey Kendall D; Yeon Jeongho; Williams Derek E; Tran T Thao; Halasyamani P Shiv; Loye Hans Conrad zur

来源：CrystEngComm, 2015, 17(25): 4654-4661.

DOI：10.1039/c5ce00671f

Crystals of Na5RE4F[SiO4](4) (RE = Pr, Nd, Sm-Tm) and K5Pr4F[SiO4](4) were grown using a fluoride flux synthetic technique. All compositions crystallize in the tetragonal space group I (4) over bar with lattice parameter ranges of a = 11.5094(2)-12.3745(2) angstrom and c = 5.37000(10)-5.5011(2) angstrom. Antiferromagnetic ordering is observed for Na5RE4F[SiO4](4) (RE = Tb, Dy), second harmonic generation for Na5RE4F[SiO4](4) (RE = Pr, SmHo), and intense optical properties and fluorescence quantum yield for Na5RE4F[SiO4](4) (RE = Eu, Gd, Tb). The crystal structures and physical property measurements are discussed.

• 出版日期2015