Electron Spin Resonance in Dilute Magnetic Alloys.

Abstract

A summary is given of the theory of electron paramagnetic resonance (ESR) in dilute magnetic alloys. The conditions for the existence of the so-called ESR 'bottleneck' are precisely stated. The frequency and temperature dependent exchange relaxation rates between the localized and conduction electron spins are exhibited. It is shown that, at very low temperatures, the frequency dependence of these rates can be used to 'break the bottleneck' on the low frequency side of the resonance line. This allows for a direct measurement of the exchange coupling in alloys which, at usual helium temperatures, would be strongly bottlenecked and not exhibit exchange widths or shifts. The effect of the ESR bottleneck on the hyperfine splitting of a localized moment in a metal is also discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1970
Accession Number
AD0722818

Entities

People

  • R. Orbach

Organizations

  • University of California, Los Angeles

Tags

DTIC Thesaurus Topics

  • Alloys
  • Electron Paramagnetic Resonance
  • Electron Spin Resonance
  • Electrons
  • Frequency
  • Low Temperature
  • Magnetic Alloys
  • Magnetic Resonance
  • Paramagnetic Resonance
  • Resonance
  • Resonant Frequency
  • Spin Resonance

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics