TY  - JOUR
AU  - Samuha, Shmuel
AU  - Mugnaioli, Enrico
AU  - Grushko, Benjamin
AU  - Kolb, Ute
AU  - Meshi, Louisa
TI  - Atomic structure solution of the complex quasicrystal approximant Al $_{77}$ Rh $_{15}$ Ru $_{8}$ from electron diffraction data
JO  - Acta crystallographica / B
VL  - 70
IS  - 6
SN  - 2052-5206
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - FZJ-2015-03593
SP  - 999 - 1005
PY  - 2014
AB  - The crystal structure of the novel Al77Rh15Ru8 phase (which is an approximant of decagonal quasicrystals) was determined using modern direct methods (MDM) applied to automated electron diffraction tomography (ADT) data. The Al77Rh15Ru8 E-phase is orthorhombic [Pbma, a = 23.40 (5), b = 16.20 (4) and c = 20.00 (5) Å] and has one of the most complicated intermetallic structures solved solely by electron diffraction methods. Its structural model consists of 78 unique atomic positions in the unit cell (19 Rh/Ru and 59 Al). Precession electron diffraction (PED) patterns and high-resolution electron microscopy (HRTEM) images were used for the validation of the proposed atomic model. The structure of the E-phase is described using hierarchical packing of polyhedra and a single type of tiling in the form of a parallelogram. Based on this description, the structure of the E-phase is compared with that of the [epsilon]6-phase formed in Al-Rh-Ru at close compositions
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000345902200010
C6  - pmid:25449623
DO  - DOI:10.1107/S2052520614022033
UR  - https://juser.fz-juelich.de/record/201288
ER  -