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Physik der kondensierten Materie

, Volume 9, Issue 1–2, pp 21–22 | Cite as

De Haas-van Alphen studies of electron-scattering in dilute copper-based alloys

  • I. M. Templeton
  • P. T. Coleridge
  • L. -F. Chollet
Article

Abstract

We have used the de Haas-van Alphen (dHvA) effect to study the relaxation times of “neck” and “belly” electrons in copper containing a range of dilute heterovalent and transition-metal solutes. The scattering (Dingle) temperaturex is derived from the variation of signal amplitude with magnetic field at a fixed temperature. Values ofx are believed accurate to within 0.1°K in a range ofxN(neck) from ≃0.4°K to ≃6°K andxB(belly) from ≃0.2°K to ≃3°K. Our results may be summarized as follows:Heterovalent solutes (Zn, Cd, Al; up to 0.1 at. %)\(x_N \simeq 22^\circ K/at.{\mathbf{ }}\% {\mathbf{ }}for{\mathbf{ }}Zn,{\mathbf{ }}Cd;{\mathbf{ }} \simeq {\mathbf{ }}95^\circ K/at.{\mathbf{ }}\% {\mathbf{ }}for{\mathbf{ }}Al.{\mathbf{ }}x_N /x_B \simeq 1.2\).Transition-metal solutes (Ni, Co, Fe, Mn, Cr; up to 0.05 at.-%)\(x_N \simeq 22^\circ K/at.{\mathbf{ }}\% {\mathbf{ }}for{\mathbf{ }}Ni,{\mathbf{ }}Mn;{\mathbf{ }} \simeq {\mathbf{ }}95^\circ K/at.{\mathbf{ }}\% {\mathbf{ }}for{\mathbf{ }}Fe,{\mathbf{ }}Cr;{\mathbf{ }} \simeq {\mathbf{ }}70{\mathbf{ }}^\circ K/at.{\mathbf{ }}\% {\mathbf{ }}for{\mathbf{ }}Co.{\mathbf{ }}x_N /x_B \simeq 0.5{\mathbf{ }}for{\mathbf{ }}Ni,{\mathbf{ }}Mn;{\mathbf{ }} \simeq {\mathbf{ }}0.3{\mathbf{ }}for{\mathbf{ }}Fe,{\mathbf{ }}Cr;{\mathbf{ }} \simeq {\mathbf{ }}0.4{\mathbf{ }}for{\mathbf{ }}Co.\).

An anomalous dependence of dHvA amplitude on magnetic field has been observed for belly oscillations in several very dilute Cu Cr alloys. This anomaly is both concentration and temperature-sensitive, and is probably related to the Kondo effect.

Keywords

Copper Spectroscopy Magnetic Field Neural Network State Physics 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag 1969

Authors and Affiliations

  • I. M. Templeton
    • 1
  • P. T. Coleridge
    • 1
  • L. -F. Chollet
    • 1
  1. 1.Division of Pure PhysicsNational Research CouncilOttawaCanada

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