Abstract
We report neutron diffraction studies of FeS single crystals obtained from RbxFe2-yS2 single crystals via a hydrothermal method. While no 5×5 iron vacancy order or block antiferromagnetic order typical of RbxFe2-yS2 is found in our samples, we observe C-type short-range antiferromagnetic order with moments pointed along the c axis hosted by a different phase of FeS with an expanded interlayer spacing. The Néel temperature for this magnetic order is determined to be 170±4 K. Our finding of a variant FeS structure hosting this C-type antiferromagnetic order demonstrates that the known FeS phase synthesized in this method is in the vicinity of a magnetically ordered ground state, providing insights into understanding a variety of phenomena observed in FeS and the related FeSe1-xSx iron chalcogenide system.
| Original language | English |
|---|---|
| Article number | 034802 |
| Journal | Physical Review Materials |
| Volume | 4 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2020 |
Funding
Work at Sun Yat-Sen University was supported by the National Natural Science Foundation of China (Grants No. 11904414 and No. 11904416), Natural Science Foundation of Guangdong (Grant No. 2018A030313055), National Key Research and Development Program of China (Grant No. 2019YFA0705700), the Fundamental Research Funds for the Central Universities (Grant No. 18lgpy73), the Hundreds of Talents program of Sun Yat-Sen University, and Young Zhujiang Scholar program. Work at UC Berkeley and Lawrence Berkeley Laboratory was supported by the Office of Science, Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division of the US Department of Energy (DOE) under Contract No. DE-AC02-05-CH1231 within the Quantum Materials Program (KC2202) and BES. This research used resources at the the High Flux Isotope Reactor, DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory.
| Funders | Funder number |
|---|---|
| DOE Office of Science | |
| Office of Basic Energy Sciences | |
| US Department of Energy | |
| U.S. Department of Energy | DE-AC02-05-CH1231, KC2202 |
| Office of Science | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory | |
| National Natural Science Foundation of China | 11904414, 11904416 |
| Sun Yat-Sen University | |
| Natural Science Foundation of Guangdong Province | 2018A030313055 |
| National Key Research and Development Program of China | 2019YFA0705700 |
| Fundamental Research Funds for the Central Universities | 18lgpy73 |