| Автор | M De Boissieu |
| Автор | P Stephens |
| Автор | M Boudard |
| Автор | C Janot |
| Автор | D L Chapman |
| Автор | M Audier |
| Дата выпуска | 1994-12-05 |
| dc.description | The atomic structure of the perfect AlPdMn icosahedral phase has been studied on a single grain by anomalous X-ray diffraction close to the Pd edge. A method is proposed for relative normalization of the data, in order to extract the partial structure factor F<sub>Pd</sub> of the Pd atoms. The Pd is found to be very ordered in the six-dimensional description of the quasicrystal, as was previously inferred from X-ray and neutron single-crystal diffraction data. However, a phason Debye-Waller-like term has to be introduced to account for the data. Comparison of the present data set with low-resolution data indicates the existence of diffuse scattering located close to the Bragg reflections whose intensity scales as (1-exp(-B<sub>perp</sub>Q<sup>2</sup><sub>perp</sub>)) as expected from random fluctuations of the atomic surfaces. The average fluctuation is found to be of the order of 1 AA. Moreover the comparison of the data with a spherical model shows that the atomic surface describing Pd atoms is likely to be made of several disjointed pieces. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Anomalous X-ray diffraction study of the AlPdMn icosahedral phase |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/49/015 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | 10725 |
| Последняя страница | 10745 |
| Аффилиация | M De Boissieu; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA |
| Аффилиация | P Stephens; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA |
| Аффилиация | M Boudard; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA |
| Аффилиация | C Janot; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA |
| Аффилиация | D L Chapman; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA |
| Аффилиация | M Audier; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA |
| Выпуск | 49 |
