Complexity of hexagonal approximates in the RE13Zn ∼58 system (RE = Ce, Pr, Nd, Sm, Gd, Tb and Dy)
(2006) In Zeitschrift fur Kristallographie 221(5-7). p.391-401- Abstract
For the RE13Zn58 quasicrystal approximants (RE = Ce, Pr, Nd, Sm, Gd, Tb, Dy), single crystals were prepared from the elements and their structures were refined from single-crystal X-ray diffraction data. They are derived from the Gd13Cd58 type structure and crystallize in the space group P63/mmc or its subgroups. The crystal structures of Ce and Pr compounds are identical to that of the archetype, in the Nd compound a pair exchange disorder changes the composition and for Sm a further, partially occupied interstitial position lowers the symmetry to P6 3mc. For the compounds with Gd, Tb and Dy, the occupancy may order, lowering the symmetry further. For the case of... (More)
For the RE13Zn58 quasicrystal approximants (RE = Ce, Pr, Nd, Sm, Gd, Tb, Dy), single crystals were prepared from the elements and their structures were refined from single-crystal X-ray diffraction data. They are derived from the Gd13Cd58 type structure and crystallize in the space group P63/mmc or its subgroups. The crystal structures of Ce and Pr compounds are identical to that of the archetype, in the Nd compound a pair exchange disorder changes the composition and for Sm a further, partially occupied interstitial position lowers the symmetry to P6 3mc. For the compounds with Gd, Tb and Dy, the occupancy may order, lowering the symmetry further. For the case of Tb13Zn59 high quality single crystals allowed us to refine the fully ordered orthorhombic super structure.
(Less)
- author
- Piao, Shuying ; Gómez, Cesar Pay and Lidin, Sven LU
- publishing date
- 2006-07-17
- type
- Contribution to journal
- publication status
- published
- keywords
- Approximant, Order-disorder, Single crystal structure analysis, Superstructure, X-ray diffraction
- in
- Zeitschrift fur Kristallographie
- volume
- 221
- issue
- 5-7
- pages
- 11 pages
- publisher
- Oldenbourg Verlag
- external identifiers
-
- scopus:33745853530
- ISSN
- 0044-2968
- DOI
- 10.1524/zkri.2006.221.5-7.391
- language
- English
- LU publication?
- no
- id
- 830f485a-0d08-4e95-9710-05a3178cd320
- date added to LUP
- 2019-04-08 15:19:22
- date last changed
- 2022-01-31 18:51:56
@article{830f485a-0d08-4e95-9710-05a3178cd320, abstract = {{<p>For the RE<sub>13</sub>Zn<sub>58</sub> quasicrystal approximants (RE = Ce, Pr, Nd, Sm, Gd, Tb, Dy), single crystals were prepared from the elements and their structures were refined from single-crystal X-ray diffraction data. They are derived from the Gd<sub>13</sub>Cd<sub>58</sub> type structure and crystallize in the space group P6<sub>3</sub>/mmc or its subgroups. The crystal structures of Ce and Pr compounds are identical to that of the archetype, in the Nd compound a pair exchange disorder changes the composition and for Sm a further, partially occupied interstitial position lowers the symmetry to P6 <sub>3</sub>mc. For the compounds with Gd, Tb and Dy, the occupancy may order, lowering the symmetry further. For the case of Tb<sub>13</sub>Zn<sub>59</sub> high quality single crystals allowed us to refine the fully ordered orthorhombic super structure.</p>}}, author = {{Piao, Shuying and Gómez, Cesar Pay and Lidin, Sven}}, issn = {{0044-2968}}, keywords = {{Approximant; Order-disorder; Single crystal structure analysis; Superstructure; X-ray diffraction}}, language = {{eng}}, month = {{07}}, number = {{5-7}}, pages = {{391--401}}, publisher = {{Oldenbourg Verlag}}, series = {{Zeitschrift fur Kristallographie}}, title = {{Complexity of hexagonal approximates in the RE<sub>13</sub>Zn <sub>∼58</sub> system (RE = Ce, Pr, Nd, Sm, Gd, Tb and Dy)}}, url = {{http://dx.doi.org/10.1524/zkri.2006.221.5-7.391}}, doi = {{10.1524/zkri.2006.221.5-7.391}}, volume = {{221}}, year = {{2006}}, }