Basis of strong change of hybridization-induced magnetic ordering between CeSb and CeTe

Journal Article · Fri Apr 15 00:00:00 EDT 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.340685· OSTI ID:5278521

Kioussis, N; Cooper, B R; Wills, J M

A sharp change in the nature of the magnetic ordering has been observed on going from CeSb to CeTe, both of which have NaC1 structures with a small decrease in lattice parameter. This is an interesting example of the way in which hybridization of partially delocalized f electrons with band electrons gives rise to highly unusual magnetic properties which show great chemical sensitivity. In the present paper we apply our previous ab initio treatment of hybridization-induced effects to investigate this striking change in magnetic behavior. We have performed self-consistent warped muffin-tin LMTO band calculations treating the Ce 4f states as resonance states that are constrained to be localized. Compared to CeSb, the anion-derived p bands in CeTe sink well below the Fermi energy, thus strongly changing the band-f hybridization. We have calculated the hybridization dressing of the crystal-field levels and the anisotropic two-ion exchange interaction and compared them with those calculated for CeSb and with experiment. A strong decrease in the two-ion interaction explains the drastic change in observed magnetic behavior between CeSb and CeTe.

• Research Organization: Department of Physics, West Virginia University Morgantown, West Virginia 26506
• OSTI ID: 5278521
• Journal Information: J. Appl. Phys.; (United States), Vol. 63:8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM COMPOUNDS
HYBRIDIZATION
MAGNETIC PROPERTIES
CERIUM TELLURIDES
ANTIMONY COMPOUNDS
CRYSTAL FIELD
EXCHANGE INTERACTIONS
MUFFIN-TIN POTENTIAL
CHALCOGENIDES
INTERACTIONS
PHYSICAL PROPERTIES
POTENTIALS
RARE EARTH COMPOUNDS
TELLURIDES
TELLURIUM COMPOUNDS
360603* - Materials- Properties