Abstract
The structure of LaNi9Si4 compound has been investigated by X-ray powder ans single crystal method. This silicide crystalize in CeNi8.5Si4 structure type: space group I4 mcm, Pearson symbol tI56, а = 7.86415(6), с = 11.5101(1) Å, RB = 0.0653; а = 7.83933(17), с = 11.4472(5) Å, R = 0.0220, wR = 0.0734 for X-ray single crystal data. Unlike the prototype CeNi8.5Si4.5, where the Wyckoff position 4d is occupied by mixture of Ni and Si atoms, in the structure of the ternary silicide LaNi9Si4, the atoms are ordered in all Wyckoff positions. Additionally, the electrical properties for the compound were investigated. The temperature dependence of the electrical resistivity exhibits metal behaviour (ρ0 = 121.60 μΩ∙cm, θD = 191 K, A = 2.2·10-9 μΩ∙m∙K-3).
References
Villars P., Cenzual K., Eds. Pearson’s Crystal Data: Crystal Structure Database for Inorganic Compounds. Ohio (USA): ASM International®, Materials Park, 2018.
Godart C., Gupta L.C., Tomy C.V., Patil S., Nagarajan R., Beaurepaire E., Vijayaraghavan R., Yakhmi J.V. Magnetism and mixed valence in some R2M3X5 compounds: R = Ce, Eu, U; M = d metals, X = Si, Ge. Mater.Res.Bull. 1988. 23 (12): 1781–1785.
https://doi.org/10.1016/0025-5408(88)90189-4
Kishimoto Yu., Kawasaki Yu., Ohno T. Mixed valence state in Ce and Yb compounds studied by magnetic susceptibility. Phys. Lett. A. 2003. 317 (3–4): 308–314.
https://doi.org/10.1016/j.physleta.2003.08.050
Pani M., Manfrinetti P., Provino A., Fang Yuan, Mozharivskyj Y., Morozkin A.V., Knotko A.V., Garshev A.V., Yapaskurt V.O., Isnard O. New tetragonal derivatives of cubic NaZn13-type structure: RNi6Si6 compounds, crystal structure and magnetic ordering (R = Y, La, Ce, Sm, Gd–Yb). J. Solid State Chem. 2014. 210: 45–52. https://doi.org/10.1016/j.jssc.2013.10.046
Bodak O.I., Gladyshevskii E.I., Ternary systems containing rare earth metals. Lviv: Vyshcha shkola, 1985. (in Russian)
Bodak O.I., Gladyshevskii E.I., Ternary compounds of the NaZn13 type and related types in the systems {La, Ce, Pr, Nd, Sm, Eu, Gd}–Ni–Si and {La, Ce}–{Fe, Co}–Si. Dopov. Akad. Nauk Ukr. RSR, Ser. A. 1969. 12: 1125. (in Russian)
Belan B., Bednarchuk T. J., Kinzhybalo V., Dzevenko M., Pukas S., Gladyshevskii R. Crystal structure of the new silicide
LaNi11.8–11.4Si1.2–1.6. Z. Naturforsch. B. 2021. 76 (3–4): 243–247.
https://doi.org/10.1515/znb-2021-0021
Bodak O.I., Gladyshevskii E.I. Crystal Structure of the Compound CeNi8.6Si2.4 and Related Compounds. Dopov. Akad. Nauk Ukr. RSR, Ser. A, 1969. 6: 452–455. (in Russian)
Michor H., Berger St., El-Hagary M., Paul C., Bauer E., Hilscher G., Rogl P., Giester G. Crystal structure and Kondo lattice behavior of CeNi9Si4. Phys. Rev. B: Condens. Matter Mater. Phys. 2003. 67: 224428 (1–10).
https://doi.org/10.1103/PhysRevB.67.224428
Stoe WinXPOW, version 2.21. Darmstadt: Stoe & Cie GmbH, 2007.
Young R.A., Sakthivel A., Moss T.S., Paiva-Santos C.O. DBWS-9411 – an upgrade of the DBWS, J. Appl. Crystallogr. 28, 366 (1995). https://doi.org/10.1107/S0021889895002160
Sheldrick G. M. SHELX-97 – WinGX Version. Release 97-2, Germany: University of Göttingen, 1997.
Emsley J., The Elements, 2nd ed. Oxford: Clarendon Press, 1991.
Mott N.F., Jones H. The theory of the properties of metals and alloys. Oxford: University Press, 1958.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2023 Bohdana Belan, Svitala Pukas, Mariya Dzevenko, Mykola Manyako, Bohdan Kuzhel, Roman Gladyshevskii