Plokhikh, Igor and Tsirlin, Alexander A. and Heletta, Lukas and Klenner, Steffen and Charkin, Dmitri O. and Kuznetsov, Alexey N. and Shevelkov, Andrei and Poettgen, Rainer and Pfitzner, Arno (2020) Synthesis, electronic structure and physical properties of two new layered compounds, EuFAgSe and EuFAg1-delta Te, featuring the active redox pair Eu2+/Ag+. DALTON TRANSACTIONS, 49 (22). pp. 7426-7435. ISSN 1477-9226, 1477-9234
Full text not available from this repository. (Request a copy)Abstract
Systematic studies of the ZrCuSiAs (also LaOAgS or 1111) structure type resulted in the synthesis of two new fluoride chalcogenides, EuFAgSe and EuFAg1-delta Te, whereas their sulfide analog, EuFAgS, could not be obtained. Both new compounds are tetragonal,P4/nmm, with cell parametersa= 4.1542(1) angstrom,c= 9.2182(1) angstrom for the selenide anda= 4.3255(1) angstrom,c= 9.5486(1) angstrom for the telluride. Rietveld refinement reveals a significant silver deficiency in the telluride (delta= 0.05), while the selenide is nearly stoichiometric. Both compounds are semiconductors as shown by diffuse reflectance spectroscopy and confirmed by density-functional calculations of the band structure. Magnetism of both compounds is predominantly driven by Eu2+, as indicated by magnetic susceptibility measurements and corroborated by(151)Eu Mossbauer spectroscopy. EuFAg1-delta Te and EuFAgSe are paramagnetic down to 1.8 K.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PLANE-WAVE; SUPERCONDUCTOR; FIELD; COHP; EU; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Mar 2021 11:39 |
| Last Modified: | 22 Mar 2021 11:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44388 |
Actions (login required)
 |
View Item |
