Magnetic EXAFS calculations for disordered alloys | Zendy

Popescu V. | Zendy; Ebert H. | Zendy; Jenkins A. C. | Zendy

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Magnetic EXAFS calculations for disordered alloys

Author(s) -

Popescu V.,

Ebert H.,

Jenkins A. C.

Publication year - 1999

Publication title -

journal of synchrotron radiation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.172

H-Index - 99

ISSN - 1600-5775

DOI - 10.1107/s0909049598017130

Subject(s) - extended x ray absorption fine structure , materials science , condensed matter physics , physics , optics , absorption spectroscopy

A fully relativistic scheme is presented that allows one to describe the magnetic Extended X-ray Absorption Fine Structure (MEXAFS) in disordered systems. This method is based on a combination of the relativistic multiple scattering theory and the Coherent Potential Approximation (CPA) alloy theory. The alloy systems Fe=Coz-= and FexPtl-= are used to illustrate the ability of this theoretical approach due to the availability of suitable experimental data. For the latter system a rather pronounced impact of the degree of order on the MEXAFS has been found.

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