Spectroscopic study of metallic magnetism in single-crystalline Nb1-y Fe2+y

D. Rauch; M. Kraken; F. J. Litterst; S. Süllow; H. Luetkens; M. Brando; T. Förster; J. Sichelschmidt; A. Neubauer; C. Pfleiderer; W. J. Duncan; F. M. Grosche

doi:10.1103/PhysRevB.91.174404

Spectroscopic study of metallic magnetism in single-crystalline Nb1-y Fe2+y

D. Rauch, M. Kraken, F. J. Litterst, S. Süllow, H. Luetkens, M. Brando, T. Förster, J. Sichelschmidt, A. Neubauer, C. Pfleiderer, W. J. Duncan, F. M. Grosche

Chair of Experimental Physics on the Topology of Correlated Systems

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Abstract

We have investigated single crystals and polycrystals from the series Nb1-yFe2+y, -0.004≤y≤0.018, by electron spin resonance, muon spin relaxation, and Mössbauer spectroscopy. Our data establish that at lowest temperatures all samples exhibit bulk magnetic order. Slight Fe excess induces low-moment ferromagnetism, consistent with bulk magnetometry, while Nb-rich and stoichiometric NbFe2 display spin density wave order with small magnetic moment amplitudes of order ∼0.001-0.01μB/Fe. This provides microscopic evidence for a modulated magnetic state on the border of ferromagnetism in NbFe2.

Original language	English
Article number	174404
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	91
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.91.174404
State	Published - 6 May 2015

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Rauch, D., Kraken, M., Litterst, F. J., Süllow, S., Luetkens, H., Brando, M., Förster, T., Sichelschmidt, J., Neubauer, A., Pfleiderer, C., Duncan, W. J., & Grosche, F. M. (2015). Spectroscopic study of metallic magnetism in single-crystalline Nb1-y Fe2+y. Physical Review B - Condensed Matter and Materials Physics, 91(17), Article 174404. https://doi.org/10.1103/PhysRevB.91.174404

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title = "Spectroscopic study of metallic magnetism in single-crystalline Nb1-y Fe2+y",

abstract = "We have investigated single crystals and polycrystals from the series Nb1-yFe2+y, -0.004≤y≤0.018, by electron spin resonance, muon spin relaxation, and M{\"o}ssbauer spectroscopy. Our data establish that at lowest temperatures all samples exhibit bulk magnetic order. Slight Fe excess induces low-moment ferromagnetism, consistent with bulk magnetometry, while Nb-rich and stoichiometric NbFe2 display spin density wave order with small magnetic moment amplitudes of order ∼0.001-0.01μB/Fe. This provides microscopic evidence for a modulated magnetic state on the border of ferromagnetism in NbFe2.",

author = "D. Rauch and M. Kraken and Litterst, {F. J.} and S. S{\"u}llow and H. Luetkens and M. Brando and T. F{\"o}rster and J. Sichelschmidt and A. Neubauer and C. Pfleiderer and Duncan, {W. J.} and Grosche, {F. M.}",

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year = "2015",

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doi = "10.1103/PhysRevB.91.174404",

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AU - Rauch, D.

AU - Kraken, M.

AU - Litterst, F. J.

AU - Süllow, S.

AU - Luetkens, H.

AU - Brando, M.

AU - Förster, T.

AU - Sichelschmidt, J.

AU - Neubauer, A.

AU - Pfleiderer, C.

AU - Duncan, W. J.

AU - Grosche, F. M.

PY - 2015/5/6

Y1 - 2015/5/6

N2 - We have investigated single crystals and polycrystals from the series Nb1-yFe2+y, -0.004≤y≤0.018, by electron spin resonance, muon spin relaxation, and Mössbauer spectroscopy. Our data establish that at lowest temperatures all samples exhibit bulk magnetic order. Slight Fe excess induces low-moment ferromagnetism, consistent with bulk magnetometry, while Nb-rich and stoichiometric NbFe2 display spin density wave order with small magnetic moment amplitudes of order ∼0.001-0.01μB/Fe. This provides microscopic evidence for a modulated magnetic state on the border of ferromagnetism in NbFe2.

AB - We have investigated single crystals and polycrystals from the series Nb1-yFe2+y, -0.004≤y≤0.018, by electron spin resonance, muon spin relaxation, and Mössbauer spectroscopy. Our data establish that at lowest temperatures all samples exhibit bulk magnetic order. Slight Fe excess induces low-moment ferromagnetism, consistent with bulk magnetometry, while Nb-rich and stoichiometric NbFe2 display spin density wave order with small magnetic moment amplitudes of order ∼0.001-0.01μB/Fe. This provides microscopic evidence for a modulated magnetic state on the border of ferromagnetism in NbFe2.

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DO - 10.1103/PhysRevB.91.174404

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VL - 91

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 174404

ER -

Spectroscopic study of metallic magnetism in single-crystalline Nb1-y Fe2+y

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