The Spin Glass State and the Kondo Effect in Dilute Au (Cr), Au (Mn) and Au (Fe) Alloys Studied by Nuclear Orientation of ^<54>Mn

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概要

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• The nuclear orientation experiment on "Mn rnuclei in Au metal and Au(Cr),Au(Mn), and Au(Fe) alloys have been made to study the nature of the spin glass andthe Kondo effect in these alloys. Concentrations of impurities in the alloys werebetween 5 and 500 at. ppm and measurements were performed in the temperature rangebetween 7 and 8 mK. Gamma-ray anisotropy from oriented "Mn in the Au(Mn) andAu(Cr) alloys can be explained by the 3-dimensional Lorentzian distribution function,when the molecular field approximation is applied to the spirn glass state. For theAu(Fe) alloys, however, widths of the distribution function are less than those expectedfrom the molecular field approxirrnation, which may be attributed to the Kondo effect.Nuclear orientation of "Mn in An metal is explained by the slow relaxation model withS..z 5/2. This indicates that the Kondo temperature of Au(Mu) is lower than 7 mK.

• 社団法人日本物理学会の論文
• 1977-10-15

著者

• ONO Kazuo

  Institute for Solid State Physics University of Tokyo

• Ono Kazuo

  Institute For Solid State Physics The University Of Tokyo

• HIRAKI Tetsu

  Institute for Solid State Physics,University of Tokyo

• Hiraki Tetsu

  Institute For Solid State Physics University Of Tokyo:fukuoka District Central Meterological Observa

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