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

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

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Abstract

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.

Authors:

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)

Publication Date:: 2017-09-20

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1409364

Alternate Identifier(s):: OSTI ID: 1495527

Report Number(s):: IS-J-9493
Journal ID: ISSN 0304-8853; PII: S0304885317319315; TRN: US1703195

Grant/Contract Number:: AC02-07CH11358

Resource 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

Country of Publication:: United States

Language:: English

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

Citation Formats


                    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., 2017. 
        Web.  doi:10.1016/j.jmmm.2017.09.046.

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                    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:https://doi.org/10.1016/j.jmmm.2017.09.046

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                    Bud’ko, Sergey L., Jo, Na Hyun, Downing, Savannah S., and Canfield, Paul C. Wed .  
        "On magnetic structure of CuFe2Ge2: Constrains from the 57Fe Mössbauer spectroscopy".  United States.  doi:https://doi.org/10.1016/j.jmmm.2017.09.046.  https://www.osti.gov/servlets/purl/1409364.

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@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}

}

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

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