Szczegóły publikacji
Opis bibliograficzny
Structural peculiarities in the ß phase of the $La_{0.75}Ce_{0.25}Ni_{4.8}Al_{0.2}$ deuterides / J. CZUB, W. Jamka, J. PRZEWOŹNIK, A. ZARZECKA, A. Hoser, D. Wallacher, N. Grimm, Ł. GONDEK // Journal of Alloys and Compounds ; ISSN 0925-8388. — 2019 — vol. 788, s. 533-540. — Bibliogr. s. 539–540, Abstr. — Publikacja dostępna online od: 2019-02-25
Autorzy (8)
- AGHCzub Joanna
- AGHJamka Wojciech
- AGHPrzewoźnik Janusz
- AGHZarzecka Anna
- Hoser Andreas
- Wallacher Dirk
- Grimm N.
- AGHGondek Łukasz
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 121362 |
|---|---|
| Data dodania do BaDAP | 2019-06-10 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jallcom.2019.02.259 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Alloys and Compounds |
Abstract
In this contribution the structural, magnetic and sorption properties of the novel La0.75Ce0.25Ni4.8Al0.2 alloy and its deuterides are discussed. The collected data indicate good stability of the alloy during the cycle-life and thermal treatment tests. Particularly, the desorption pressure is almost constant versus the cycle number. The results of the in-situ neutron diffraction studies show the unusual behaviour of the deuterium rich beta phase. Unexpectedly, the beta phase belongs to the same P6/mmm space group as the hydrogen poor alpha phase. Moreover, the beta phase behaves like a solid solution on the plateau of the pressure-composition-temperature (PCT) curve. The deuterium sites and their occupations in both a and b phases are determined from the neutron diffraction data, giving the first-hand insight into the mechanism of the PCT hysteresis. As far as the magnetic properties are concerned, cerium is trivalent in the investigated alloy. However, no magnetic ordering down to 3 K is observed. It can be concluded that the sorption properties of the crystal depend on the cerium valence, what distinguishes the alloy from the other compositions. (C) 2019 Elsevier B.V. All rights reserved.
