On magnetic structure of CuFe 2Ge 2: Constrains from the 57Fe Mössbauer spectroscopy
57Fe Mössbauer spectroscopy measurements were performed on a powdered CuFe 2Ge 2 sample that orders antiferromagnetically at ~175 K. Whereas a paramagnetic doublet was observed above the Néel temperature, a superposition of paramagnetic doublet and magnetic sextet (in approximately 0.5:0.5 ratio) was observed in the magnetically ordered state, suggesting a magnetic structure similar to a double-Q spin density wave with half of the Fe paramagnetic and another half bearing static moment of ~0.5–1μ B. Lastly, these results call for a re-evaluation of the recent neutron scattering data and band structure calculations, as well as for deeper examination of details of sample preparation techniques.
- Publication Date:
- Report Number(s):
- IS-J-9493
Journal ID: ISSN 0304-8853; PII: S0304885317319315; TRN: US1703195
- Grant/Contract Number:
- AC02-07CH11358
- Type:
- Accepted Manuscript
- Journal Name:
- Journal of Magnetism and Magnetic Materials
- Additional Journal Information:
- Journal Volume: 446; Journal Issue: C; Journal ID: ISSN 0304-8853
- Publisher:
- Elsevier
- Research Org:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; Mössbauer spectroscopy; Magnetic order; Hyperfine parameters
- OSTI Identifier:
- 1409364