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Title: 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.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
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

Bud’ko, Sergey L., Jo, Na Hyun, Downing, Savannah S., and Canfield, Paul C.. On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy. United States: N. p., Web. doi:10.1016/j.jmmm.2017.09.046.
Bud’ko, Sergey L., Jo, Na Hyun, Downing, Savannah S., & Canfield, Paul C.. On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy. United States. doi:10.1016/j.jmmm.2017.09.046.
Bud’ko, Sergey L., Jo, Na Hyun, Downing, Savannah S., and Canfield, Paul C.. 2017. "On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy". United States. doi:10.1016/j.jmmm.2017.09.046. https://www.osti.gov/servlets/purl/1409364.
@article{osti_1409364,
title = {On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy},
author = {Bud’ko, Sergey L. and Jo, Na Hyun and Downing, Savannah S. and Canfield, Paul C.},
abstractNote = {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 ~0.5–1μB. 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.},
doi = {10.1016/j.jmmm.2017.09.046},
journal = {Journal of Magnetism and Magnetic Materials},
number = C,
volume = 446,
place = {United States},
year = {2017},
month = {9}
}