Flux growth and optical properties of K7CaY2(B5O10)3 nonlinear crystal

• Published in: Materials research bulletin Vol. 107; pp. 333 - 338
• Main Authors: Kuznetsov, A.B., Ezhov, D.M., Kokh, K.A., Kononova, N.G., Shevchenko, V.S., Rashchenko, S.V., Pestryakov, E.V., Svetlichnyi, V.A., Lapin, I.N., Kokh, A.E.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01-11-2018
• Subjects: ABSORPTION SPECTRA; Borates; BORON OXIDES; CALCIUM FLUORIDES; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Crystal structure; CRYSTALS; Growth from high temperature solutions; LATTICE PARAMETERS; MELTING POINTS; Nonlinear optical; Nonlinear optics materials; NONLINEAR PROBLEMS; OPTICAL PROPERTIES; POTASSIUM OXIDES; RAMAN SPECTRA; SPACE GROUPS; TEMPERATURE RANGE 0400-1000 K; X-RAY DIFFRACTION; Nonlinear optics materials; Nonlinear optical; Growth from high temperature solutions; Crystal structure; Borates
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2018.07.037

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•K7CaY2(B5O10)3 crystals were grown from new flux.•SHG efficiency for K7CaY2(B5O10)3 crystals is comparable to that of KDP.•K7CaY2(B5O10)3 crystals have UV cut off edge at 190 nm.
Non-centrosymmetric borates K7CaY2(B5O10)3 have been synthesized by solid state reaction and the crystals were successfully grown by the top seeded solution growth method using K2O-B2O3-CaF2 flux. According to the single X-ray diffraction, the structure belongs to the R32 space group with lattice parameters a = 13.2516(2) Å and c = 14.9679(3) Å. IR, Raman, absorption spectra as well as data on melting temperature were obtained for the crystal. The short edge of UV absorption and SHG intensity comparable with KH2PO4 (KDP) suggests that this crystal is a promising nonlinear-optical material.