[Zr{sub 0.72}Y{sub 0.28}]Al{sub 4}C{sub 4}: A new member of the homologous series (MC){sub l}(T{sub 4}C{sub 3}){sub m} (M=Zr, Y and Hf, T=Al, Si and Ge)

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.04.007· OSTI ID:21370459

Sugiura, Keita; Iwata, Tomoyuki ^[1]; Nakano, Hiromi ^[2]; Fukuda, Koichiro ^[1]

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1. Department of Environmental and Materials Engineering, Nagoya Institute of Technology, Nagoya 466-8555 (Japan)
2. Electron Microscope Laboratory, Ryukoku University, Otsu 520-2194 (Japan)

A new layered carbide, [Zr{sub 0.72(3)}Y{sub 0.28(3)}]Al{sub 4}C{sub 4}, has been synthesized and characterized by X-ray powder diffraction, transmission electron microscopy and energy dispersive X-ray spectroscopy (EDX). The atom ratios [Zr:Y] were determined by EDX, and the initial structure model was derived by the direct methods, and further refined by Rietveld method. The crystal is trigonal (space group P3-barm1, Z=1) with lattice dimensions of a=0.333990(5) nm, c=1.09942(1) nm and V=0.106209(2) nm{sup 3}. This compound shows an intergrowth structure with [Zr{sub 0.72}Y{sub 0.28}C{sub 2}] thin slabs separated by Al{sub 4}C{sub 3}-type [Al{sub 4}C{sub 4}] layers. It is a new member with l=1 and m=1 of the homologous series, the general formula of which is (MC){sub l}(T{sub 4}C{sub 3}){sub m} (l=1, 2 and 3, m=1 and 2, M=Zr, Y and Hf, T=Al, Si and Ge). - Graphical Abstract: The layered carbide (Zr{sub 0.72}Y{sub 0.28}C)Al{sub 4}C{sub 3} has been synthesized and found to be a new member with l=1 and m=1 of the homologous series (MC){sub l}(T{sub 4}C{sub 3}){sub m} (l=1, 2 and 3, m=1 and 2, M=Zr, Y and Hf, T=Al, Si and Ge).

• OSTI ID: 21370459
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 7; Other Information: DOI: 10.1016/j.jssc.2009.04.007; PII: S0022-4596(09)00169-8; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM CARBIDES
LAYERS
SPACE GROUPS
TRANSMISSION ELECTRON MICROSCOPY
TRIGONAL LATTICES
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON MICROSCOPY
MICROSCOPY
SCATTERING
SPECTROSCOPY
SYMMETRY GROUPS
TRANSITION ELEMENT COMPOUNDS