Formation of mineral-like phases in the system Sr9In(PO4)7–Ca9Ln(PO4)7

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   Research subject. A series of mineral-like phases with strontiowhitlockite structure (1–x)Sr9In(PO4)7–xCa9Ln(PO4)7 Ln = Eu3+, Yb3+.   Aim: An analysis of phase formation patterns and crystal-chemical characteristics influencing the crystallization of mineral-like phases within the studied series.   To achieve the aim, the following set of Materials and Methods is used: the powder X-ray diffraction (PXRD), the second harmonic generation (SHG), dielectric spectroscopy, the photoluminescence spectroscopy.    Results. Doped phosphates with strontiowhitlockite structure were synthesized by a high temperature solid-state method. The structure was confirmed through X-ray diffraction method. The PXRD patterns of all samples were compared with strontiowhitlockite-type phosphate Sr9In(PO4)7. There was an absence of SHG signals, conforming the non-polar structure. The λ-maximum is observed in the temperature dependence of the dielectric constant for all sensitized samples, while no anomalies were recorded on the loss tangent. The similar behaviour in dielectric curves may indicate isostructurality of studied samples, and crystallisation in non-polar space group. It was shown that samples demonstrate stable photoluminescence in red-orange region for Eu3+-doped phosphates, while Yb3+-doped ones shown IR-photoluminescence properties.   Conclusions. A series (1–x)Sr9In(PO4)7–xCa9Ln(PO4)7 was crystallised in Sr9In(PO4)7 structure, where Sr2+ sites, with coordination number equals to 8, were substituted by Ca2+ and Eu3+. Such ions cannot occupy In3+ site, which is presented by small octahedral, due to high ionic radius difference between ions. However smallest ion as Yb3+ can occupy small octahedral site. Dielectric and photoluminescence properties were studied in (1–x)Sr9In(PO4)7–xCa9Ln(PO4)7.

Sobre autores

I. Nikiforov

M.V. Lomonosov Moscow State University

Email: nikiforoviv@my.msu.ru

E. Zhukovskaya

M.V. Lomonosov Moscow State University

A. Gosteva

I.V. Tananaev Institute of Chemistry – Subdivision of the Federal Research Centre, KSC RAS

S. Aksenov

Geological Institute, KSC RAS; Laboratory of Arctic Mineralogy and Material Sciences, KSC RAS

D. Deyneko

M.V. Lomonosov Moscow State University; Laboratory of Arctic Mineralogy and Material Sciences, KSC RAS

Bibliografia

  1. Никифоров И.В., Титков В.В., Аксенов С.М., Лазоряк Б.И., Барышникова О.В., Дейнеко Д.В. (2024) Структурные особенности люминофоров на основе стронциовитлокита. ЖСХ, 65(8), 131548-131548. doi: 10.26902/jsc_id131548
  2. Asmaa E.K., Mohammed E., Giancarlo D.V., Armida S., Rosanna R., Manuela R., Francesco C. (2017) Synthesis, structure refinement and vibrational spectroscopy of new rare-earth tricalcium phosphates Ca9RE(PO4)7 (RE = La, Pr, Nd, Eu, Gd, Dy, Tm, Yb). Ceram. Int., 4715645-15653.
  3. Belik A.A., Izumi F., Ikeda T., Okui M., Malakho A.P., Morozov V.A., Lazoryak B.I. (2002) Whitlockite-Related Phosphates Sr9A(PO4)7 (A=Sc, Cr, Fe, Ga, and In): Structure Refinement of Sr9In(PO4)7 with Synchrotron X-Ray Powder Diffraction Data. J. Solid State Chem., 168(1), 237-244. doi: 10.1006/jssc.2002.9716
  4. Belik A.A., Izumi F., Stefanovich S.Y., Malakho A.P., Lazoryak B.I., Leonidov I.A., Leonidova O.N., Davydov S.A. (2002) Polar and Centrosymmetric Phases in Solid Solutions Ca3-xSrx(PO4)2 (0 ≤ x ≤ 16/7). Chem. Mater., 14(7), 3197-3205. doi: 10.1021/cm020243l
  5. Britvin S.N., Pakhomovskii Y.A., Bogdanova A.N., Skiba V.I. (1991) Strontiowhitlockite, Sr9Mg(PO3OH) (PO4)6, a new mineral species from the Kovdor Depo sit, Kola Peninsula, U.S.S.R. Can. Mineral., 29(1), 87-93.
  6. Deyneko D.V., Aksenov S.M., Nikiforov I.V., Stefanovich S.Y., Lazoryak B.I. (2020) Symmetry Inhomogeneity of Ca9-xZnxEu(PO4)7 Phosphor Determined by Second-Harmonic Generation and Dielectric and Photoluminescence Spectroscopy. Cryst. Growth Des., 20(10), 6461-6468. doi: 10.1021/acs.cgd.0c00637
  7. Deyneko D.V., Nikiforov I.V., Spassky D.A., Dikhtyar Y.Y., Aksenov S.M., Stefanovich S.Y., Lazoryak B.I. (2019) Luminescence of Eusup>3+ as a probe for the determination of the local site symmetry in β-Ca3(PO4)2-related structures. CrystEngComm, 21(35), 5235-5242. doi: 10.1039/C9CE00931K
  8. Du F., Nakai Y., Tsuboi T., Huang Y., Seo H.J. (2011) Luminescence properties and site occupations of Eu3+ ions doped in double phosphates Ca9R(PO4)7 (R = Al, Lu). J. Mater. Chem., 21(12), 4669-4678. doi: 10.1039/C0JM03324C
  9. Kim D., Seo Y.W., Park S.H., Choi B.C., Kim J.H., Jeong J.H. (2020) Theoretical design and characterization of high efficient Sr9Ln(PO4)7: Eu2+/sup> phosphors. Mater. Res. Bull., 127, 110856. doi: 10.1016/j.materresbull.2020.110856
  10. Kong J., Wang Y., Tong W., Li L., Xu Y., Chen N., Liu N. (2024) Highly efficient cyan-red emission in self-activated Sr9In(VO4)7:xEusup>3+ phosphors for applications in W-LEDs and optical thermometry. J. Alloys Compd., 983, 173936. doi: 10.1016/j.jallcom.2024.173936
  11. Ma X., Sun S., Ma J. (2019) A novel orange-red Sr9Ga(PO4)7:Sm3+ phosphors for white light emitting dio des. Materials Res. Express, 6(11), 116207. doi: 10.1088/2053-1591/ab47c6
  12. Morozov V.A., Belik A.A., Stefanovich S.Y., Grebenev V.V., Lebedev O.I., Van Tendeloo G., Lazoryak B.I. (2002) High-temperature phase transition in the whitlockite-type phosphate Ca9In(PO4)7. J. Solid State Chem., 165(2), 278-288.
  13. Nikiforov I.V., Spassky D.A., Krutyak N.R., Shendrik R.Y., Zhukovskaya E.S., Aksenov S.M., Deyneko D.V. (2024) Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors. Molecules, 29(1). doi: 10.3390/molecules29010124
  14. Yu M., Lin J., Wang S.B. (2005) Effects of xand R3+ on the luminescent properties of Eu3+ in nanocrystalline YVxP1-xO4:Eu3+ and RVO1:Eu3+ thin-film phosphors. Applied Physics A, 80(2), 353-360. doi: 10.1007/s00339-003-2230-5.
  15. Yu Q., Wang L., Huang P., Shi Q., Tian Y., Cui C.E. (2020) Synthesis and photoluminescence properties of Eu2+-activated Sr9In1-yLuy(PO4)7 phosphors. J. Mater. Sci. – Mater. Electron., 31(1), 196-201. doi: 10.1007/s10854-018-0501-3
  16. Zhang J., Cai G., Wang W., Ma L., Wang X., Jin Z. (2020) Tuning of Emission by Eu3+ Concentration in a Pyrophosphate: The Effect of Local Symmetry. Inorg. Chem., 59(4), 2241-2247. doi: 10.1021/acs.inorgchem.9b02949

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