Structure and Oxidation States of Giant Unit Cell Compound Dy117+xFe57–ySn112–z
作者： Alexander T. Brown , Keaton G. Barron , Bryan G. Salazar , Parker Kirby , Gregory T. McCandless
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摘要: Motivated by the complex structure and properties of giant unit cell intermetallic compounds, a new isostructural Fe analogue Dy117Co57Sn112 type was synthesized. Single crystals Dy122Fe55Sn101 were grown at 1260 °C via Dy–Fe eutectoid flux. The also adopts space group Fm3m with lattice parameters = 29.914(9) A, V 26769(23) A3, Z 4. has large volume, structural complexity, consists seven Dy, eight Fe, ten Sn unique crystallographic sites. There are fifteen fully occupied atomic positions, three pairs alternating positions positional disorder, partially Within this cell, only approximately half remainder atoms either positionally or occupationally disordered. X-ray photoelectron spectroscopy indicates that compound contains Dy3+, Fe0, Fe2+, Sn0, Sn4+.
sci-hub.se 参考文章(28)
George M. Sheldrick, Crystal structure refinement with SHELXL Acta Crystallographica Section C-crystal Structure Communications. ,vol. 71, pp. 3- 8 ,(2015) , 10.1107/S2053229614024218
L.C.J. Pereira, D.P. Rojas, J.C. Waerenborgh, Structural and magnetic characterization of DyFexSn2 (0≤x≤0.3) intermetallics Intermetallics. ,vol. 13, pp. 61- 67 ,(2005) , 10.1016/J.INTERMET.2004.05.009
B.Chafik El Idrissi, G. Venturini, B. Malaman, Crystal structures of RFe6Sn6 (R = Sc, Y, GdTm, Lu) rare-earth iron stannides Materials Research Bulletin. ,vol. 26, pp. 1331- 1338 ,(1991) , 10.1016/0025-5408(91)90149-G
P. C. Canfield, Z. Fisk, Growth of single crystals from metallic fluxes Philosophical Magazine Part B. ,vol. 65, pp. 1117- 1123 ,(1992) , 10.1080/13642819208215073
Julia Dshemuchadse, Daniel Y. Jung, Walter Steurer, Structural building principles of complex face-centered cubic intermetallics Acta Crystallographica Section B-structural Science. ,vol. 67, pp. 269- 292 ,(2011) , 10.1107/S0108768111025390
X-ray photoelectron core-level studies of the heavy rare-earth metals and their oxides Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 354, pp. 269- 290 ,(1977) , 10.1098/RSPA.1977.0067
P. Salamakha, P. Demchenko, J. Stηpień-Damm, Ternary NdRuSn system Journal of Alloys and Compounds. ,vol. 260, pp. L1- L3 ,(1997) , 10.1016/S0925-8388(97)00163-1
J. Liu, V. Smetana, K. A. Gschneidner, G. J. Miller, V. K. Pecharsky, The crystal structure and magnetic properties of Pr117Co56.7Ge112 Journal of Applied Physics. ,vol. 113, pp. 1- 4 ,(2013) , 10.1063/1.4794376
V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram Journal of Alloys and Compounds. ,vol. 189, pp. 229- 233 ,(1992) , 10.1016/0925-8388(92)90712-I
B. Malaman, B. Roques, A. Courtois, J. Protas, Structure cristalline du stannure de fer Fe3Sn2 Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. ,vol. 32, pp. 1348- 1351 ,(1976) , 10.1107/S0567740876005323