Symmetry and Ferromagnetic Clusters

Abstract

Isomers of pure Fe13 and icosahedral Fe12X clusters are studied using the all-electron linear-combination-of-Gaussian-type-orbital (LCGTO) local- density-functional (LDF) methods that allow the spin and geometry of the cluster to be determined self-consistently. The Fe13 ground state is icosahedral. The icosahedral cluster also has the greatest magnetic moment because of increased symmetry-required orbital degeneracy for electrons of different spins. The central atom of the icosahedral iron cluster has been varied to optimize the spin of the cluster. Keywords: Cluster magnetic moments, Ferromagnetism, Symmetry.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1990
Accession Number
ADA227830

Entities

People

  • Brett I. Dunlap

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Angular Momentum
  • Atoms
  • Chemistry
  • Crystal Lattices
  • Crystal Structure
  • Electron Energy
  • Electrons
  • Energy Levels
  • Fermi Levels
  • Geometry
  • Ground State
  • Magnetic Moments
  • Magnetic Properties
  • Military Research
  • Symmetry
  • United States

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Quantum Chemistry
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Space