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

Conference · Thu Apr 03 00:00:00 EST 1997

OSTI ID:12349

Freeman, A J; Gofron, K J; Kimball, C W; Lee, P L; Montano, P A; Rao, F; Wang, X

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.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 12349
• Report Number(s): ANL/MSD/CP-92755; TRN: AH200119%%404
• 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
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
CRYSTAL STRUCTURE
DICHROISM
ELECTRONS
INVAR
IRON
MAGNETISM
NICKEL
PROBES
SHAPE