Magnetic Properties of CoCl2-Intercalated Graphite,

Abstract

The temperature and magnetic field dependence of the magnetic susceptibility and heat capacity of graphite-CoC12 are investigated to understand the role of dimensionality in the observed magnetic phase transitions. The structure of graphite-CoC12 shows similarities between the magnetic layers of Co(+2) in pristine and in the intercalated CoC12 compound. However, microstructural analysis shows the presence of small islands of magnetic ions. The theoretical model for the 2-dimensional planar magnets is extended to include small magnetic domains. The finite size effect analysis shows good agreement between the experimental and theoretical results. The presence of external magnetic fields demonstrates the static scaling hypothesis for the magnetic susceptibility and heat capacity.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA133860

Entities

People

  • G. Dresselhaus
  • K. Y. Szeto
  • M. Elahy
  • M. Shayegan

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Diffraction
  • Electrons
  • Energy
  • Heat Capacity
  • Magnetic Domains
  • Magnetic Fields
  • Magnetic Phenomena
  • Magnetic Properties
  • Massachusetts
  • Materials Science
  • Measurement
  • Phase Transformations
  • Transition Temperature
  • Two Dimensional
  • X Rays

Fields of Study

  • Physics

Readers

  • Geotechnical Engineering.
  • Materials Science and Engineering.
  • Plasma Physics / Magnetohydrodynamics