### Abstract

Iron sites in quasicrystalline Al(TFe)-alloys have been investigated with Mössbauer spectroscopy. The quadrupole splitting of these materials is about 0.4 mm/s, showing that the iron atom is not in an icosahedral {Mathematical expression} site. A measurement in an external magnetic field of H_{ext}≈5 T yields the asymmetry parameter η=(V_{xx}-V_{yy})/V_{zz}. The value of η enables one to decide between the applicability of some mathematical structure models of quasicrystals. The results are: η=0.8 for decagonal Al_{7}(Mn_{0.7}Fe_{0.3})_{2} η=0.9 for icosahedral Al_{6}Cr_{0.7}Fe_{0.3} using an one site approximation. This means that the iron atoms are in sites with a symmetry lower than axially symmetry, which suits very well for a Penrose lattice.

Original language | English |
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Pages (from-to) | 1093-1097 |

Number of pages | 5 |

Journal | Hyperfine Interactions |

Volume | 55 |

Issue number | 1-4 |

DOIs | |

Publication status | Published - Jul 1990 |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Condensed Matter Physics
- Physics and Astronomy(all)
- Electronic, Optical and Magnetic Materials

### Cite this

*Hyperfine Interactions*,

*55*(1-4), 1093-1097. https://doi.org/10.1007/BF02397129

**Local iron symmetry in quasicrystals.** / Werkman, R. D.; Vincze, I.; Schurer, P. J.; van der Woude, F.

Research output: Contribution to journal › Article

*Hyperfine Interactions*, vol. 55, no. 1-4, pp. 1093-1097. https://doi.org/10.1007/BF02397129

}

TY - JOUR

T1 - Local iron symmetry in quasicrystals

AU - Werkman, R. D.

AU - Vincze, I.

AU - Schurer, P. J.

AU - van der Woude, F.

PY - 1990/7

Y1 - 1990/7

N2 - Iron sites in quasicrystalline Al(TFe)-alloys have been investigated with Mössbauer spectroscopy. The quadrupole splitting of these materials is about 0.4 mm/s, showing that the iron atom is not in an icosahedral {Mathematical expression} site. A measurement in an external magnetic field of Hext≈5 T yields the asymmetry parameter η=(Vxx-Vyy)/Vzz. The value of η enables one to decide between the applicability of some mathematical structure models of quasicrystals. The results are: η=0.8 for decagonal Al7(Mn0.7Fe0.3)2 η=0.9 for icosahedral Al6Cr0.7Fe0.3 using an one site approximation. This means that the iron atoms are in sites with a symmetry lower than axially symmetry, which suits very well for a Penrose lattice.

AB - Iron sites in quasicrystalline Al(TFe)-alloys have been investigated with Mössbauer spectroscopy. The quadrupole splitting of these materials is about 0.4 mm/s, showing that the iron atom is not in an icosahedral {Mathematical expression} site. A measurement in an external magnetic field of Hext≈5 T yields the asymmetry parameter η=(Vxx-Vyy)/Vzz. The value of η enables one to decide between the applicability of some mathematical structure models of quasicrystals. The results are: η=0.8 for decagonal Al7(Mn0.7Fe0.3)2 η=0.9 for icosahedral Al6Cr0.7Fe0.3 using an one site approximation. This means that the iron atoms are in sites with a symmetry lower than axially symmetry, which suits very well for a Penrose lattice.

UR - http://www.scopus.com/inward/record.url?scp=0842269178&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0842269178&partnerID=8YFLogxK

U2 - 10.1007/BF02397129

DO - 10.1007/BF02397129

M3 - Article

AN - SCOPUS:0842269178

VL - 55

SP - 1093

EP - 1097

JO - Hyperfine Interaction

JF - Hyperfine Interaction

SN - 0304-3843

IS - 1-4

ER -