Zbigniew M Stadnik and Guowei Zhang 2005 J. Phys.: Condens. Matter 17 6599 doi:10.1088/0953-8984/17/42/001
Zbigniew M Stadnik1,3 and Guowei Zhang2
Show affiliationsA systematic57Fe Mössbauer effect study in a varying temperature range between 5.0 and 296.6 K and in an external magnetic field of 9.0 T on a high-quality stable decagonal quasicrystal Al65Co15Cu19.9Fe0.1 is presented. It is shown that the iron atoms are located in two distinct classes of sites. The values of the principal component of the electric field gradient tensor and the asymmetry parameter at these sites are, respectively, −1.90(10) × 1021 V m−2, 0.97(15) and −3.95(12) × 1021 V m−2, 0.00(17). The average quadrupole splitting decreases with temperature as T3/2. The vibrations of the Fe atoms are well described by a Debye model, with the Debye temperature of 546(7) K.
76.80.+y Mössbauer effect; other γ-ray spectroscopy
63.70.+h Statistical mechanics of lattice vibrations and displacive phase transitions
Issue 42 (26 October 2005)
Received 24 June 2005, in final form 16 September 2005
Published 7 October 2005
Zbigniew M Stadnik and Guowei Zhang 2005 J. Phys.: Condens. Matter 17 6599
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