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Synthesis and thermal expansion of some lanthanide-containing apatites

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Abstract

Compounds with the general formula CaLn4(SiO4)3O (Ln = Pr, Sm, Eu), belonging to the apatite class, have been prepared by solid-state reactions and have been studied at high temperatures by high-temperature X-ray diffraction and differential scanning calorimetry. The results demonstrate that the volume expansivity of these apatites and its temperature coefficient are determined by the ionic radius of the lanthanides.

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References

  1. Jothinathan, E., Vammeesel, K., Vleugels, J., et al., Apatite type lanthanum silicate and composite anode half cells, Solid State Ionics, 2011, vol. 192, pp. 419–423.

    Article  CAS  Google Scholar 

  2. Fukuda, K., Asaka, T., and Uchida, T., Thermal expansion of lanthanum silicate oxyapatite (La9.33 + 2x (SiO4)6O2 + 3x), lanthanum oxyorthosilicate (La2SiO5) and lanthanum sorosilicate (La2Si2O7), J. Solid State Chem., http://dx.doi.org/10.1016/j.jssc.2012.04.043

  3. Nakayama, S., Kageyama, T., Aono, H., and Sadaoka, Y., Ionic conductivity of lanthanoid silicates, Ln10(SiO4)6O3 (Ln = La, Nd, Sm, Gd, Dy, Y, Ho, Er and Yb), J. Mater. Chem., 1995, vol. 5, pp. 1801–1805.

    Article  CAS  Google Scholar 

  4. Nakayama, S. and Sakamoto, M., Electrical properties of new type high oxide ionic conductor RE10Si6O27 (RE = La, Pr, Nd, Sm, Gd, Dy), J. Eur. Ceram. Soc., 1998, vol. 18, pp. 1413–1418.

    Article  CAS  Google Scholar 

  5. Pasero, M., Kampf, A.R., Ferraris, C., et al., Nomenclature of the apatite supergroup minerals, Eur. J. Mineral., 2010, vol. 22, pp. 163–179.

    Article  CAS  Google Scholar 

  6. Skakle, J.M.S., Dickson, C.L., and Glasser, F.P., The crystal structures of CeSiO4 and Ca2Ce8(SiO4)6O2, Powder Diffraction, 2000, vol. 15, pp. 234–238.

    Article  CAS  Google Scholar 

  7. White, T.J. and Dong, Z.-L., Structural derivation and crystal chemistry of apatites, Acta Crystallogr., Sect. B: Struct. Sci., 2003, vol. 59, pp. 1–16.

    Article  CAS  Google Scholar 

  8. Chernorukov, N.G., Knyazev, A.V., and Bulanov, E.N., Isomorphism and phase diagram of the Pb5(PO4)3Cl-Pb5(VO4)3Cl system, Russ. J. Inorg. Chem., 2010, vol. 55, no. 9, pp. 1463–1470.

    Article  CAS  Google Scholar 

  9. Belousov, R.I. and Filatov, S.K., Algorithm for calculating the thermal expansion tensor and constructing the thermal expansion diagram for crystals, Glass Phys. Chem., 2007, vol. 33, no. 3, pp. 271–275.

    Article  CAS  Google Scholar 

  10. Filatov, S.K., Vysokotemperaturnaya kristallokhimiya. Teoriya, metody i rezul’taty issledovanii (High-Temperature Crystal Chemistry: Theory, Methods, and Results), Leningrad: Nedra, 1990.

    Google Scholar 

  11. Chernorukov, N.G., Knyazev, A.V., and Bulanov, E.N., Phase Transitions and Thermal Expansion of Apatite-Structured Compounds, Inorg. Mater., 2011, vol. 47, no. 2, pp. 172–177.

    Article  CAS  Google Scholar 

  12. Knyazev, A.V., Chernorukov, N.G., and Bulanov, E.N., Apatite-structured compounds: Synthesis and high-temperature investigation, Mater. Chem. Phys., 2012, vol. 132, pp. 773–781.

    Article  CAS  Google Scholar 

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Correspondence to A. V. Knyazev.

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Original Russian Text © A.V. Knyazev, E.N. Bulanov, A.O. Korshunov, O.V. Krasheninnikova, 2013, published in Neorganicheskie Materialy, 2013, Vol. 49, No. 11, pp. 1222–1227.

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Knyazev, A.V., Bulanov, E.N., Korshunov, A.O. et al. Synthesis and thermal expansion of some lanthanide-containing apatites. Inorg Mater 49, 1133–1137 (2013). https://doi.org/10.1134/S0020168513110095

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  • DOI: https://doi.org/10.1134/S0020168513110095

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