Effect of nitrogen on the structural and magnetic properties of intermetallic compounds with the ThMn sub 12 structure
Journal Article
·
· Journal of Applied Physics; (United States)
- University of Delaware, Newark, Delaware (United States). Department of Physics and Astronomy
The effects of nitrogen uptake on the structural and magnetic properties of RFe{sub 12{minus}{ital x}}T{sub {ital x}} alloys have been studied. Several interstitial nitrides with composition RFe{sub 12{minus}{ital x}}T{sub {ital x}}N{sub {ital y}} (R=Nd and Sm and T=Ti and V) were prepared by heat treating fine powders of RFe{sub 12{minus}{ital x}}T{sub {ital x}} alloys in N{sub 2} gas. Preliminary results show the following observations: (1) The ThMn{sub 12} structure of the original compounds is retained with the addition of nitrogen but with increased lattice constants ({ital a} and {ital c}). (2) The Curie temperature is greatly enhanced by about 150--175 K. (3) The character of magnetic anisotropy is changed from weak uniaxial'' type to strong uniaxial'' type for NdFe{sub 12{minus}{ital x}}T{sub {ital x}}N{sub {ital y}} and from uniaxial'' to planar'' for SmFe{sub 12{minus}{ital x}}T{sub {ital x}}N{sub {ital y}}.
- DOE Contract Number:
- FG02-90ER45413
- OSTI ID:
- 5098863
- Journal Information:
- Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 70:10; ISSN 0021-8979; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
HEAT TREATMENTS
IRON COMPOUNDS
IRON NITRIDES
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NEODYMIUM NITRIDES
NITRIDATION
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM NITRIDES
TITANIUM COMPOUNDS
TITANIUM NITRIDES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM NITRIDES
VERY HIGH TEMPERATURE
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
HEAT TREATMENTS
IRON COMPOUNDS
IRON NITRIDES
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NEODYMIUM NITRIDES
NITRIDATION
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM NITRIDES
TITANIUM COMPOUNDS
TITANIUM NITRIDES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM NITRIDES
VERY HIGH TEMPERATURE