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On the Bond Orientational Order in Icosahedral Phases
Author(s) -
Radulescu O.,
Manaila R.
Publication year - 1990
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221610105
Subject(s) - icosahedral symmetry , rigidity (electromagnetism) , crystallography , diffraction , materials science , quasicrystal , bond order , condensed matter physics , bond length , chemistry , crystal structure , physics , optics , composite material
Icosahedral phases in Al—transition metal alloys are characterized by long range bond orientational order (BOO). The composition of the TM sublattice can influence the degree of BOO, presumably by altering the rigidity of the bonds. This fact can be evidenced by measuring the widths of the X‐ray diffraction peaks, which are shown to be very sensitive to this particular kind of disorder. Quantitative comparison of experimental data with Hendricks‐Teller‐type calculations provides estimates for the degree of orientational disorder in AlCr x Fe 1− x samples.