Magnetic Properties of Icosahedral (Au,Cu)-Al-Yb Quasicrystals

• Authors: S. Oki , T. Hiroto , Y. Muro , R. Tamura
• Languages of publication: EN

Abstracts

EN

We have synthesized Cu-substituted (Au,Cu)-Al-Yb quasicrystals in order to investigate the relationship between the quasilattice constant and the magnetic property. The quasilattice constant a_{R} is found to decrease as Au is replaced by Cu, and the maximum reduction of 2.18% in a_{R} was observed for x=0.60 in (Au_{1-x}Cu_x)_{49}Al_{34}Yb_{17}. Magnetic measurements of (Au_{1-x}Cu_x)_{49}Al_{34}Yb_{17} (x=0, 0.10, 0.20, 0.50) show that the intermediate-valence state of Yb persists in all the studied compositions. The effective magnetic moment is found to depend on r̅/a_{R} rather than on the quasilattice constant a_{R}. This suggests that r̅/a_{R} can be regarded as a measure of the chemical pressure induced on the Yb atoms.

Keywords

EN

75.50.Kj; 75.20.Hr

Discipline

• 75.20.Hr: Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions(for Kondo effect and scattering mechanisms in electronic conduction, see 72.15.Qm and 72.10.Fk)
• 75.50.Kj: Amorphous and quasicrystalline magnetic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 2
• Pages: 553-555

Dates

published

2014-08

Contributors

author

S. Oki

• Department of Materials Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, 125-8585, Japan

author

T. Hiroto

• Department of Materials Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, 125-8585, Japan

author

Y. Muro

• Department of Liberal Arts and Sciences, Toyama Prefectural University, Imizu Toyama, 939-0398, Japan

author

R. Tamura

• Department of Materials Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, 125-8585, Japan

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Identifiers

DOI

10.12693/APhysPolA.126.553