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

Journal Article · · Journal of Magnetism and Magnetic Materials
 [1];  [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
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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.

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; TRN: US1703195
Journal Information:
Journal of Magnetism and Magnetic Materials, Vol. 446, Issue C; ISSN 0304-8853
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (20)

Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2 text January 2015
Iron-Based Layered Superconductor La[O 1- x F x ]FeAs ( x = 0.05−0.12) with T c = 26 K journal March 2008
FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe 2 As 2 journal August 2010
The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides journal October 2010
Superconductivity in iron compounds journal December 2011
Anisotropic magnetization, specific heat and resistivity of RFe2Ge2 single crystals journal March 2004
Effects of substitution on low-temperature physical properties of LuFe 2 Ge 2 journal December 2011
Unconventional sign-changing superconductivity near quantum criticality in YFe 2 Ge 2 journal January 2014
Superconductivity and magnetism in YFe 2 Ge 2 journal January 2014
Crystal growth and annealing study of fragile, non-bulk superconductivity in YFe 2 Ge 2 journal February 2015
Spectroscopic evidence for strong quantum spin fluctuations with itinerant character in YFe 2 Ge 2 journal March 2015
Unconventional Superconductivity in the Layered Iron Germanide YFe 2 Ge 2 journal March 2016
Itinerant Magnetism in Metallic CuFe2Ge2 journal March 2015
Competing magnetic ground states and their coupling to the crystal lattice in CuFe2Ge2 journal October 2016
MossA : a program for analyzing energy-domain Mössbauer spectra from conventional and synchrotron sources journal March 2012
Double-Q spin-density wave in iron arsenide superconductors journal January 2016
Investigation of the crystal properties of RFe2Si2 and RFe2Ge2 by X-ray diffraction and mössbauer spectroscopy journal July 1990
Detection of magnetic order in theS=1chain compoundLiVGe2O6using implanted spin-polarized muons journal June 2003
Relationship between the magnetic hyperfine field and the magnetic moment journal November 2009
New-Structure-Type Fe-Based Superconductors: Ca A Fe 4 As 4 ( A = K, Rb, Cs) and Sr A Fe 4 As 4 ( A = Rb, Cs) journal March 2016

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Related Subjects

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