Electronic and magnetic structures of the rare-earth compounds R sub 2 Fe sub 17 N sub. xi
Journal Article
·
· Physical Review Letters; (United States)
- Behlen Laboratory of Physics and Center for Materials Research Analysis, University of Nebraska, Lincoln, Nebraska (USA) University of Missouri Research Reactor, Columbia (Missouri) Department of Physics Astronomy, University of Delaware, Newark, Delaware (USA)
Structural and magnetic properties of the rare-earth compounds {ital R}{sub 2}Fe{sub 17}N{sub {xi}} have been studied with neutron-diffraction measurements and self-consistent spin-polarized electronic-structure calculations. The diffraction results indicate for the Nd compound that N goes into two sites in two or more phases of varying fractional N occupations. For the Y compound N occupies only one site. Electronic-structure calculations for Y{sub 2}Fe{sub 17} and Y{sub 2}Fe{sub 17}N{sub 3} give excellent results for site-dependent Fe moments, and, with spin-fluctuation theory, explain the large change in the Curie temperature on nitrogenation.
- DOE Contract Number:
- FG02-86ER45262; FG02-90ER45413
- OSTI ID:
- 5470673
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:5; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
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·
OSTI ID:5053191
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Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
COHERENT SCATTERING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
INTERMETALLIC COMPOUNDS
INTERSTITIALS
IRON COMPOUNDS
IRON NITRIDES
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NEODYMIUM NITRIDES
NEUTRON DIFFRACTION
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
POINT DEFECTS
RARE EARTH COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM NITRIDES
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
COHERENT SCATTERING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
INTERMETALLIC COMPOUNDS
INTERSTITIALS
IRON COMPOUNDS
IRON NITRIDES
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NEODYMIUM NITRIDES
NEUTRON DIFFRACTION
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
POINT DEFECTS
RARE EARTH COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM NITRIDES