FERRO-AND ANTIFERROMAGNETISM IN A CUBIC CLUSTER OF SPINS

Abstract

The Heisenberg exchange Hamiltonian has been solved exactly for a cubic array of eight spins (each with spin 1/2). Both energy eigenvalues and thermodynamic functions have been calculate . A Curie and a Neel temperature can be defined and their values determined as a function of the strength of first, second and third neighbor interactions. For some values of the exchange constants, spiral antiferromagnetic states exist.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1962
Accession Number
AD0273950

Entities

People

  • G.f. Dresselhaus

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antiferromagnetism
  • Coefficients
  • Crystal Lattices
  • Crystal Structure
  • Cubic Lattices
  • Curie Temperature
  • Eigenvalues
  • Eigenvectors
  • Heat Capacity
  • High Temperature
  • Low Temperature
  • Neel Temperature
  • Notation
  • Quantum Numbers
  • Quantum Properties
  • Symmetry
  • Wave Functions

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.