A5RE4X[TO4]4 crystal growth and photoluminescence. Fluoride flux synthesis of sodium and potassium rare earth silicate oxyfluorides

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

doi:10.1039/C5CE00671F

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A₅RE₄X[TO₄]₄ crystal growth and photoluminescence. Fluoride flux synthesis of sodium and potassium rare earth silicate oxyfluorides†

Allison M. Latshaw,^a Branford O. Wilkins,^a Kendall D. Hughey,^a Jeongho Yeon,^a Derek E. Williams,^a T. Thao Tran,^b P. Shiv Halasyamani^b and Hans-Conrad zur Loye*^a

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* Corresponding authors

^a Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
E-mail: zurloye@mailbox.sc.edu

^b Department of Chemistry, 112 Fleming Building, University of Houston, Houston, TX 77204, USA

Abstract

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 with combining macron] with lattice parameter ranges of a = 11.5094(2)–12.3745(2) Å and c = 5.37000(10)–5.5011(2) Å. Antiferromagnetic ordering is observed for Na₅RE₄F[SiO₄]₄ (RE = Tb, Dy), second harmonic generation for Na₅RE₄F[SiO₄]₄ (RE = Pr, Sm–Ho), 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.

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DOI: https://doi.org/10.1039/C5CE00671F
Article type: Paper
Submitted: 06 Apr 2015
Accepted: 24 May 2015
First published: 02 Jun 2015

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CrystEngComm, 2015,17, 4654-4661

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A₅RE₄X[TO₄]₄ crystal growth and photoluminescence. Fluoride flux synthesis of sodium and potassium rare earth silicate oxyfluorides

A. M. Latshaw, B. O. Wilkins, K. D. Hughey, J. Yeon, D. E. Williams, T. T. Tran, P. S. Halasyamani and H. zur Loye, CrystEngComm, 2015, 17, 4654 DOI: 10.1039/C5CE00671F

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