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Title: Magnetic circular x-ray dichroisms of Fe-Ni alloys at K edge.

Magnetic Circular X-ray Dichroism (MCXD) studies at K edges of Fe-Ni alloys reveal changes of the MCXD signal with composition and crystal structure. We observe that the signal at the invar composition is of comparable strength as other compositions. Moreover, the edge position is strongly dependent on lattice constant. First principles calculations demonstrate that the shape and strength of the signal strongly depends on the crystal orientation, composition, and lattice constant. We find direct relation between the MCXD signal and the p DOS. We find that the MCXD at K edge probes the magnetism due to itinerant electrons.
Authors:
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Publication Date:
OSTI Identifier:
12349
Report Number(s):
ANL/MSD/CP-92755
TRN: AH200119%%404
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: Spring Meeting of the Materials Research Society, San Francisco, CA (US), 04/08/1996--04/12/1996; Other Information: PBD: 3 Apr 1997
Research Org:
Argonne National Lab., IL (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; CRYSTAL STRUCTURE; DICHROISM; ELECTRONS; INVAR; IRON; MAGNETISM; NICKEL; PROBES; SHAPE