Plokhikh, Igor V. and Charkin, Dmitry O. and Kuznetsov, Alexey N. and Verchenko, Valery Yu and Ignatiev, Ivan A. and Kazakov, Sergey M. and Tsirlin, Alexander A. and Shevelkov, Andrei V. (2018) New clathrate-like compound Eu7Cu44Sb23-delta: synthesis, crystal and electronic structure, and the effect of As-for-Sb substitution on the magnetic properties. INTERMETALLICS, 98. pp. 1-10. ISSN 0966-9795, 1879-0216
Full text not available from this repository. (Request a copy)Abstract
A new intermetallic compound, ternary antimonide Eu7Cu44Sb23-delta [Fm-3m, a = 17.4346(1)angstrom, delta = 0.5(1)] is reported. The compound forms a continuous substitutional solid solution with its Eu7Cu44As23 archetype. The gradual substitution of Sb for As evokes partial disorder in the copper-pnictogen framework that becomes more pronounced with an increase of the Sb content and changes magnetic properties. Whereas Eu7Cu44As23 is metallic ferromagnet below 17 K, Eu7Cu44Sb23-delta shows paramagnetic behavior down to 1.8 K according to the magnetic measurements, while retaining metallic properties according to the DFT calculations. The origin of the disorder, the structure-property relationships, as well as prospects of further substitution in the anionic sub lattice are discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHYSICAL-PROPERTIES; COPPER PNICTIDES; EU; TRANSITION; METAL; SR; EU7CU44AS23; PHOSPHIDES; ARSENIDES; PRESSURE; Intermetallics; Magnetic properties; Site occupancy; Electronic structure; Calculation; Diffraction/sacterring (electron, neutron and X-ray) |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Mar 2020 08:32 |
| Last Modified: | 09 Mar 2020 08:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14363 |
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