THE PRESENT STATUS OF THE TEMPERATURE DEPENDENCE OF MAGNETOCYRSTALLINE ANISOTROPY, AND THE L(L+1)/2 POWER LAW.

Abstract

The theory of the temperature dependence of magnetocrystalline anisotropy in ferromagnetic insulators is reviewed and summarized. The l(l+1)/2 power law for the behavior at low temperatures is derived in a general fashion and the extension to arbitrary temperatures is also given. It is then shown that the l(l+1)/2 power law is not directly applicable to antiferromagnets, but that contrary to current opinion, quantum corrections to the ground state introduce significant alterations. The magnetic field dependence of the anisotropy energy and the l(l+1)/2 power law for the temperature dependence of magnetostriction are discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1965
Accession Number
AD0624718

Entities

People

  • Earl Callen
  • Herbert Callen

Organizations

  • University of Pennsylvania

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Anisotropy
  • Cooperation
  • Dielectrics
  • Ground State
  • Low Temperature
  • Magnetic Fields
  • Magnetic Phenomena
  • Magnetostriction
  • Physical Properties

Fields of Study

  • Physics

Readers

  • Government and Public Administration Law.
  • Materials Science and Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics
  • Quantum Computing