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Single Crystals of KRE(MoO 4 ) 2 , (RE‐ Ce, Pr) Obtained from Fluorides: Scheelite‐Related Structure and Luminescence
Author(s) -
Terebilenko Kateryna V.,
Bychkov Konstantin L.,
Klymyshyna Kateryna E.,
Baumer Vyacheslav N.,
Slobodyanik Mykola S.,
Khomenko Elena V.,
Dotsenko Volodymir P.
Publication year - 2017
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201700222
Subject(s) - scheelite , tetragonal crystal system , molybdate , photoluminescence , luminescence , crystal structure , crystallization , crystallography , materials science , single crystal , phosphor , crystal (programming language) , fluoride , spectroscopy , chemistry , inorganic chemistry , organic chemistry , tungsten , physics , optoelectronics , quantum mechanics , computer science , programming language , metallurgy
Single crystals of double molybdates KRE(MoO 4 ) 2 (RE = Ce and Pr) have been prepared from high‐temperature melts by a facile and effective fluoride‐assisted method, and investigated by XRD, FTIR and photoluminescence (PL) spectroscopy. The results showed that the molar ratio of K/Mo in the molten solution play an important role in controlling content of the crystalline products. The crystallization fields of KCe(MoO 4 ) 2 has been found avoiding oxides admixtures. Both tetragonal scheelite‐related crystal structures have been established by means of single crystal X‐Ray diffraction. Structural motif of KPr(MoO 4 ) 2 has been established for the first time, while KCe(MoO 4 ) 2 has been reinvestigated and its crystal structure data have been refined. The excitation and emission spectra of KPr(MoO 4 ) 2 have been discussed in a light of energy transfer from a molybdate host.