Accession Number : AD0673989

Title :   OPTICAL ABSORPTION SPECTRUM OF ANTIFERROMAGNETIC MNF2.

Descriptive Note : Doctoral thesis,

Corporate Author : CHICAGO UNIV ILL DEPT OF CHEMISTRY

Personal Author(s) : Meltzer,Richard Stephen

Report Date : JUN 1968

Pagination or Media Count : 203

Abstract : Since MnF2 (1) has an absorption spectrum which contains a wealth of structure at low temperatures, (2) has cubic field excited states which are well separated in energy and easily identifiable, (3) has a very simple ground state, and (4) has a well studied magnon structure, an investigation was undertaken of the excited states in the hope of observing other magnetic dipole transitions and their accompanying magnon sidebands. This study was undertaken with a view to examine the success of crystal field theory in a low symmetry crystal, to understand, in a general way, the differences and similarities between the magnon sidebands in several excited states of the Mn(+2) ion, and to determine the importance of spin assisted transitions in the overall absorption spectrum. The conclusions of such a study have obvious application to a diversity of other materials. (Author)

Descriptors :   (*MAGNETIC MATERIALS, ABSORPTION SPECTRA), (*MANGANESE COMPOUNDS, ABSORPTION SPECTRA), FLUORIDES, ANTIFERROMAGNETISM, MOLECULAR ENERGY LEVELS, MAGNETIC MOMENTS, DIPOLE MOMENTS, CRYSTAL LATTICES, FIELD THEORY, ELECTRON TRANSITIONS, BAND SPECTRA, THESES

Subject Categories : Electricity and Magnetism
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE