On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy

Bud’ko, Sergey L.; Jo, Na Hyun; Downing, Savannah S.; Canfield, Paul C.

doi:10.1016/j.jmmm.2017.09.046

On magnetic structure of CuFe₂Ge₂: Constrains from the ⁵⁷Fe Mössbauer spectroscopy

Journal Article · Wed Sep 20 00:00:00 EDT 2017 · Journal of Magnetism and Magnetic Materials

DOI:https://doi.org/10.1016/j.jmmm.2017.09.046· OSTI ID:1409364

Bud’ko, Sergey L. ^[1]; Jo, Na Hyun ^[1]; Downing, Savannah S. ^[1]; Canfield, Paul C. ^[1]

Ames Lab. and Iowa State Univ., Ames, IA (United States)

⁵⁷Fe Mössbauer spectroscopy measurements were performed on a powdered CuFe₂Ge₂ 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.

View Accepted Manuscript (DOE)

Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1409364

Alternate ID(s):: OSTI ID: 1495527

Report Number(s):: IS-J--9493; PII: S0304885317319315

Journal Information:: Journal of Magnetism and Magnetic Materials, Journal Name: Journal of Magnetism and Magnetic Materials Journal Issue: C Vol. 446; ISSN 0304-8853

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Hyperfine parameters
Magnetic order
Mössbauer spectroscopy

On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy

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On magnetic structure of CuFe₂Ge₂: Constrains from the ⁵⁷Fe Mössbauer spectroscopy