TY - JOUR
T1 - Crystal structure of the Al2CuIr phase
AU - Meshi, L.
AU - Ezersky, V.
AU - Kapush, D.
AU - Grushko, B.
PY - 2010/4/30
Y1 - 2010/4/30
N2 - A new ternary Al2CuIr phase was revealed in the Al-Cu-Ir system. It is formed below 1063 °C from the β-phase (CsCl-type structure) extending at elevated temperatures from AlIr. The crystal structure of the Al2CuIr phase was determined using a combination of precession electron diffraction and X-ray powder diffraction techniques. The phase has an orthorhombic C-centered unit cell with lattice parameters a = 8.1196(7) Å, b = 5.0646(2) Å and c = 5.18513(3) Å; its crystal symmetry can be described by the Cmme (no. 67) space group (Pearson symbol oC16). The unit cell of the new phase contains 8 Al, 4 Cu and 4 Ir atoms and exhibits a new structure type. The reliability factors characterizing the Rietveld refinement procedure are: Rp = 4.45%, Rwp = 6.45%, RB = 3.69% and Rf = 2.41%.
AB - A new ternary Al2CuIr phase was revealed in the Al-Cu-Ir system. It is formed below 1063 °C from the β-phase (CsCl-type structure) extending at elevated temperatures from AlIr. The crystal structure of the Al2CuIr phase was determined using a combination of precession electron diffraction and X-ray powder diffraction techniques. The phase has an orthorhombic C-centered unit cell with lattice parameters a = 8.1196(7) Å, b = 5.0646(2) Å and c = 5.18513(3) Å; its crystal symmetry can be described by the Cmme (no. 67) space group (Pearson symbol oC16). The unit cell of the new phase contains 8 Al, 4 Cu and 4 Ir atoms and exhibits a new structure type. The reliability factors characterizing the Rietveld refinement procedure are: Rp = 4.45%, Rwp = 6.45%, RB = 3.69% and Rf = 2.41%.
KW - Crystal structure and symmetry
KW - Electron diffraction
KW - Intermetallics
KW - X-ray powder diffraction
UR - http://www.scopus.com/inward/record.url?scp=77950861657&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2010.02.129
DO - 10.1016/j.jallcom.2010.02.129
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AN - SCOPUS:77950861657
SN - 0925-8388
VL - 496
SP - 208
EP - 211
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -