NUCLEAR SPIN-LATTICE RELAXATION IN SINGLE CRYSTALS OF CADMIUM SULFIDE.

Abstract

The nuclear magnetic resonance spin-lattice relaxation (SLR) time T sub 1 of Cd113 in undoped CdS. CdS:C1 and CdS:Li was measured as a function of temperature (77K to 500K) at 2, 4, 7, and 10 MHz. The crystals were n-type bulk single crystals and were grown by the vapor-phase-deposition method. T1 versus temperature data is presented and the CdS:Li shows a frequency inversion in the high temperature region (340K and above). The theory of nuclear-electron magnetic dipolar interaction with nuclear spin diffusion was used to fit the data in the low temperature region. A model presented consists of electrons 'hopping' between impurity sites modulating the dipolar coupling. This model predicts the features of the high temperature data. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1968
Accession Number
AD0835201

Entities

People

  • Kurt M. Lammers

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Compound Semiconductors
  • Crystals
  • Electrons
  • Frequency
  • High Temperature
  • Low Temperature
  • Magnetic Resonance
  • Nuclear Magnetic Resonance
  • Nuclear Spins
  • Quantum Properties
  • Resonance
  • Resonant Frequency
  • Single Crystals
  • Vapor Phases

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics