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Crystal and Magnetic Structures of Double Hexagonal Close-Packed Iron Deuteride.
- Source :
-
Scientific reports [Sci Rep] 2020 Jun 18; Vol. 10 (1), pp. 9934. Date of Electronic Publication: 2020 Jun 18. - Publication Year :
- 2020
-
Abstract
- Neutron powder diffraction profiles were collected for iron deuteride (FeD <subscript>x</subscript> ) while the temperature decreased from 1023 to 300 K for a pressure range of 4-6 gigapascal (GPa). The ε' deuteride with a double hexagonal close-packed (dhcp) structure, which coexisted with other stable or metastable deutrides at each temperature and pressure condition, formed solid solutions with a composition of FeD <subscript>0.68(1)</subscript> at 673 K and 6.1 GPa and FeD <subscript>0.74(1)</subscript> at 603 K and 4.8 GPa. Upon stepwise cooling to 300 K, the D-content x increased to a stoichiometric value of 1.0 to form monodeuteride FeD <subscript>1.0</subscript> . In the dhcp FeD <subscript>1.0</subscript> at 300 K and 4.2 GPa, dissolved D atoms fully occupied the octahedral interstitial sites, slightly displaced from the octahedral centers in the dhcp metal lattice, and the dhcp sequence of close-packed Fe planes contained hcp-stacking faults at 12%. Magnetic moments with 2.11 ± 0.06 μ <subscript>B</subscript> /Fe-atom aligned ferromagnetically in parallel on the Fe planes.
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 10
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 32555226
- Full Text :
- https://doi.org/10.1038/s41598-020-66669-4