Ames Laboratory; Physics and Astronomy
Physics and Astronomy, Ames Laboratory
Journal of Magnetism and Magnetic Materials
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. 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.
Iowa State University Digital Repository, Ames IA (United States)
Available for download on Thursday, September 20, 2018