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  Spin dynamics of FeGa3− xGex studied by electron spin resonance

Koo, B., Bader, K., Burkhardt, U., Baenitz, M., Gille, P., & Sichelschmidt, J. (2018). Spin dynamics of FeGa3− xGex studied by electron spin resonance. Journal of Physics: Condensed Matter, 30(4): 045601, pp. 1-7. doi:10.1088/1361-648X/aaa18a.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-A051-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-A0E8-7
Genre: Journal Article

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 Creators:
Koo, Bonho1, Author              
Bader, Kristian2, Author
Burkhardt, Ulrich3, Author              
Baenitz, Michael4, Author              
Gille, Peter2, Author
Sichelschmidt, Jörg5, Author              
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863422              
4Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863471              
5Jörg Sichelschmidt, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863468              

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 Abstract: The intermetallic semiconductor FeGa 3 acquires itinerant ferromagnetism upon electron doping by a partial replacement of Ga with Ge. We studied the electron spin resonance (ESR) of high-quality single crystals of FeGa 3− x Ge x for x from 0 up to 0.162 where ferromagnetic order is observed. For x   =  0 we observed a well-defined ESR signal, indicating the presence of pre-formed magnetic moments in the semiconducting phase. Upon Ge doping the occurrence of itinerant magnetism clearly affects the ESR properties below  ≈40 K, whereas at higher temperatures an ESR signal as seen in FeGa 3 prevails independent on the Ge content. The present results show that the ESR of FeGa 3− x Ge x is an appropriate and direct tool to investigate the evolution of 3d-based itinerant magnetism.

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Language(s): eng - English
 Dates: 2018-01-042018-01-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1088/1361-648X/aaa18a
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Title: Journal of Physics: Condensed Matter
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 30 (4) Sequence Number: 045601 Start / End Page: 1 - 7 Identifier: ISSN: 0953-8984
CoNE: https://pure.mpg.de/cone/journals/resource/954928562478