Nearly ferromagnetic Fermi-liquid behaviour in YFe                         2                         Zn                          20                          and high-temperature ferromagnetism of GdFe                         2                         Zn                          20

S. Jia; S. L. Bud'ko; G. D. Samolyuk; P. C. Canfield

doi:10.1038/nphys568

Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀

S. Jia, S. L. Bud'ko, G. D. Samolyuk, P. C. Canfield

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

One of the historic goals of alchemy was to turn base elements into precious ones. Although the practice of alchemy has been superseded by chemistry and solid-state physics, the desire to dramatically change or tune the properties of a compound, preferably through small changes in stoichiometry or composition, remains. This desire becomes even more compelling for compounds that can be tuned to extremes in behaviour. Here, we report that the RT ₂ Zn ₂₀ (R = rare earth and T = transition metal) family of compounds manifests exactly this type of versatility, even though they are more than 85% Zn. By tuning T, we find that YFe ₂ Zn ₂₀ is closer to ferromagnetism than elemental Pd, the classic example of a nearly ferromagnetic Fermi liquid. By submerging Gd in this highly polarizable Fermi liquid, we tune the system to a remarkably high-temperature ferromagnetic (T _C = 86 K) state for a compound with less than 5% Gd. Although this is not quite turning lead into gold, it is essentially tuning Zn to become a variety of model compounds.

Original language	English
Pages (from-to)	334-338
Number of pages	5
Journal	Nature Physics
Volume	3
Issue number	5
DOIs	https://doi.org/10.1038/nphys568
State	Published - May 2007
Externally published	Yes

Funding

We are indebted to the following students and magneticians: K. Dennis, N. Ni, J. Friedrich, S. A. Law, H. Ko, E. D. Mun and A. Safa-Sefat for help in sample growth and characterization and J. Schmalian and B. N. Harmon for useful discussions. We also acknowledge D. Hall for his role in this publication. Ames Laboratory is operated for the US Department of Energy by Iowa State University under Contract No. W-7405-Eng.-82. This work was supported by the Director for Energy Research, Office of Basic Energy Sciences. Correspondence and requests for materials should be addressed to P.C.C.

Funders	Funder number
US Department of Energy
Basic Energy Sciences
Iowa State University

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Jia, S., Bud'ko, S. L., Samolyuk, G. D., & Canfield, P. C. (2007). Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀ Nature Physics, 3(5), 334-338. https://doi.org/10.1038/nphys568

Jia, S. ; Bud'ko, S. L. ; Samolyuk, G. D. et al. / Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀ In: Nature Physics. 2007 ; Vol. 3, No. 5. pp. 334-338.

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abstract = " One of the historic goals of alchemy was to turn base elements into precious ones. Although the practice of alchemy has been superseded by chemistry and solid-state physics, the desire to dramatically change or tune the properties of a compound, preferably through small changes in stoichiometry or composition, remains. This desire becomes even more compelling for compounds that can be tuned to extremes in behaviour. Here, we report that the RT 2 Zn 20 (R = rare earth and T = transition metal) family of compounds manifests exactly this type of versatility, even though they are more than 85% Zn. By tuning T, we find that YFe 2 Zn 20 is closer to ferromagnetism than elemental Pd, the classic example of a nearly ferromagnetic Fermi liquid. By submerging Gd in this highly polarizable Fermi liquid, we tune the system to a remarkably high-temperature ferromagnetic (T C = 86 K) state for a compound with less than 5% Gd. Although this is not quite turning lead into gold, it is essentially tuning Zn to become a variety of model compounds.",

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Jia, S, Bud'ko, SL, Samolyuk, GD & Canfield, PC 2007, ' Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀ ', Nature Physics, vol. 3, no. 5, pp. 334-338. https://doi.org/10.1038/nphys568

Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀ . / Jia, S.; Bud'ko, S. L.; Samolyuk, G. D. et al.
In: Nature Physics, Vol. 3, No. 5, 05.2007, p. 334-338.

Research output: Contribution to journal › Article › peer-review

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Jia S, Bud'ko SL, Samolyuk GD, Canfield PC. Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀ Nature Physics. 2007 May;3(5):334-338. doi: 10.1038/nphys568

Nearly ferromagnetic Fermi-liquid behaviour in YFe ₂ Zn ₂₀ and high-temperature ferromagnetism of GdFe ₂ Zn ₂₀

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