Abstract： Loop-shaped contrasts were observed in the as-grown Al70.3Pd20.6Mn9.1 icosahedral quasicrystal (IQC) by means of x-ray diffraction topography (Lang's method). One possible direction of the apparent Burger vectors of loop-shaped defects (LSDs) was determined to be B = [1ī0ī01] by the invisibility criterion, whose physical component is parallel to the two-fold axis 1/τ[ī/0, 1/1, 0/ī] of the IQC. Apart from the relaxation of strain fields around the faceted dodecahedral holes and lamellar precipitates, LSDs may well originate from the growth of the quasicrystal, which shows that these defects could be a kind of intrinsic defect in the quasicrystals.
WANG Jian-Bo;J. GASTALDI;WANG Ren-Hui. Preliminary Characterization of Loop-Shaped Defect in the AlPdMn Icosahedral Quasicrystal by Conventional X-Ray Topography[J]. 中国物理快报, 2001, 18(1): 88-90.
WANG Jian-Bo, J. GASTALDI, WANG Ren-Hui. Preliminary Characterization of Loop-Shaped Defect in the AlPdMn Icosahedral Quasicrystal by Conventional X-Ray Topography. Chin. Phys. Lett., 2001, 18(1): 88-90.
2001, Vol. 18 
