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  Magnetic-field-tuned valence susceptibility in CeCo1- xFexSi revealed by magnetostriction

Correa, V., Curci, I., Sereni, J., Caroca Canales, N., & Geibel, C. (2022). Magnetic-field-tuned valence susceptibility in CeCo1- xFexSi revealed by magnetostriction. Journal of Physics: Conference Series, 2164: 012042, pp. 1-4. doi:10.1088/1742-6596/2164/1/012042.

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 Creators:
Correa, V.F.1, Author
Curci, I.1, Author
Sereni, J.G.1, Author
Caroca Canales, N.2, Author              
Geibel, C.3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              

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Free keywords: Binary alloys; Iron alloys; Silicon alloys; Temperature, Antiferromagnetic orderings; Applied magnetic fields; Iron doping; Lows-temperatures; Magnetic orders; Magnetic-field; Magnetoelastics; Magnetostrictive effect; Orbitals; Si alloys, Magnetostriction
 Abstract: We report magnetoelastic studies in the CeCo1-x Fe x Si alloys. Iron doping has a profound effect on the low temperature linear magnetostriction. At T = 2 K, the strength of the magnetostriction peaks at x = 0.23 where it reaches a value as large as "LL=3×10-3 in an applied magnetic field B = 16 T. This Fe concentration corresponds to the critical one xc above which long-range antiferromagnetic order is no longer observed. The progressive increment of the hibridization between the Ce 4f orbital and the conduction band, as the magnetic order vanishes, gives rise to a sizeable valence susceptibility that can be finely tuned by the magnetic field explaining the large magnetostrictive effect around xc . At higher x, the magnetostriction decreases, in agreement with a weaker valence susceptibility resulting from a stronger hibridization. © Published under licence by IOP Publishing Ltd.

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Language(s): eng - English
 Dates: 2022-03-172022-03-17
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1088/1742-6596/2164/1/012042
BibTex Citekey: Correa2022
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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 2164 Sequence Number: 012042 Start / End Page: 1 - 4 Identifier: ISSN: 1742-6588
CoNE: https://pure.mpg.de/cone/journals/resource/111097776606042