Superstructure of Eu4Cd25 : A quasicrystal approximant
(2004) In Chemistry - A European Journal 10(13). p.3279-3285- Abstract
The quasicrystal approximant Eu4Cd25, formerly designated EuCd6, was synthesized and characterized by means of single-crystal X-ray diffraction. Superstructure reflections corresponding to an F-centered cubic unit cell with a doubled cell-parameter relative to the I-centered cubic sub-cell could be observed in the diffraction data. This gives the largest cubic unit cell reported to date among binary alloys. The superstructure exhibits structural features that are found in all the RE-Cd 6 approximants as well as a further ordering between vacant/occupied Cd8 cubes and oriented Cd4 tetrahedra, which causes the superstructure. A reversible high-temperature phase-transition... (More)
The quasicrystal approximant Eu4Cd25, formerly designated EuCd6, was synthesized and characterized by means of single-crystal X-ray diffraction. Superstructure reflections corresponding to an F-centered cubic unit cell with a doubled cell-parameter relative to the I-centered cubic sub-cell could be observed in the diffraction data. This gives the largest cubic unit cell reported to date among binary alloys. The superstructure exhibits structural features that are found in all the RE-Cd 6 approximants as well as a further ordering between vacant/occupied Cd8 cubes and oriented Cd4 tetrahedra, which causes the superstructure. A reversible high-temperature phase-transition was observed at 782 K by means of DSC.
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- author
- Pay Gómez, Cesar and Lidin, Sven LU
- publishing date
- 2004-07-05
- type
- Contribution to journal
- publication status
- published
- keywords
- Approximants, Intermetallic phases, Quasicrystals, Rare earths, X-ray diffraction
- in
- Chemistry - A European Journal
- volume
- 10
- issue
- 13
- pages
- 7 pages
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:3142715349
- ISSN
- 0947-6539
- DOI
- 10.1002/chem.200305463
- language
- English
- LU publication?
- no
- id
- d3fcac67-d2cb-49bc-8c87-617fdba9e6ae
- date added to LUP
- 2019-04-08 15:25:10
- date last changed
- 2022-04-02 07:51:32
@article{d3fcac67-d2cb-49bc-8c87-617fdba9e6ae, abstract = {{<p>The quasicrystal approximant Eu<sub>4</sub>Cd<sub>25</sub>, formerly designated EuCd<sub>6</sub>, was synthesized and characterized by means of single-crystal X-ray diffraction. Superstructure reflections corresponding to an F-centered cubic unit cell with a doubled cell-parameter relative to the I-centered cubic sub-cell could be observed in the diffraction data. This gives the largest cubic unit cell reported to date among binary alloys. The superstructure exhibits structural features that are found in all the RE-Cd <sub>6</sub> approximants as well as a further ordering between vacant/occupied Cd<sub>8</sub> cubes and oriented Cd<sub>4</sub> tetrahedra, which causes the superstructure. A reversible high-temperature phase-transition was observed at 782 K by means of DSC.</p>}}, author = {{Pay Gómez, Cesar and Lidin, Sven}}, issn = {{0947-6539}}, keywords = {{Approximants; Intermetallic phases; Quasicrystals; Rare earths; X-ray diffraction}}, language = {{eng}}, month = {{07}}, number = {{13}}, pages = {{3279--3285}}, publisher = {{Wiley-Blackwell}}, series = {{Chemistry - A European Journal}}, title = {{Superstructure of Eu<sub>4</sub>Cd<sub>25</sub> : A quasicrystal approximant}}, url = {{http://dx.doi.org/10.1002/chem.200305463}}, doi = {{10.1002/chem.200305463}}, volume = {{10}}, year = {{2004}}, }