Electronic structure of Sm[sub 2]Fe[sub 17]N[sub [ital x]] compounds

Journal Article · Sat May 15 04:00:00 EDT 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.352432· OSTI ID:6891803

Woods, J P; Fernando, A S; Jaswal, S S; Patterson, B M; Welipitiya, D; Sellmyer, D J ^[1]

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1. Behlen Laboratory of Physics and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588 (United States)

Sm[sub 2]Fe[sub 17]N[sub [ital x]] is of considerable current interest as a permanent-magnet material because of its enhanced Curie temperature and uniaxial anisotropy. The electronic structures of Sm[sub 2]Fe[sub 17]N[sub [ital x]] for [ital x]=0 and [ital x][similar to]2.6 have been studied with photoemission and spin-polarized calculations. The materials are prepared by arc melting and nitrogen is introduced by ion implantation. The nitrogen concentration is quantified with Auger electron spectroscopy. The Sm 4[ital f] electrons with binding energies between 6 and 10 eV are investigated with resonant photoemission using photon energies near 140 eV. The major features of ultra-violet photoemission spectra include the Fe 3[ital d] band with a strong peak at 0.8 eV and a small peak at 2.9 eV below the Fermi energy which agree quite well with the theoretical density of states calculation. The modification of the electronic structure with nitrogen concentration is studied to understand the effect of nitrogen addition on the magnetic properties.

• DOE Contract Number: FG02-86ER45262
• OSTI ID: 6891803
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 73:10; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BAND THEORY
DISPERSIONS
ELECTRONIC STRUCTURE
EMISSION
ION IMPLANTATION
IRON COMPOUNDS
IRON NITRIDES
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
MIXTURES
NITRIDES
NITROGEN COMPOUNDS
PHOTOEMISSION
PHYSICAL PROPERTIES
PNICTIDES
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM NITRIDES
SECONDARY EMISSION
SELF-CONSISTENT FIELD
TRANSITION ELEMENT COMPOUNDS