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Influence of the crystal structure and chemical order on the magnetic and magneto-optical properties of equiatomic CoPt alloy

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons126518

Antonov,  V. N.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126918

Yaresko,  A. N.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Uba, L., Uba, S., Horpynyuk, O., Antonov, V. N., & Yaresko, A. N. (2002). Influence of the crystal structure and chemical order on the magnetic and magneto-optical properties of equiatomic CoPt alloy. Journal of Applied Physics, 91(2), 775-779. doi:10.1063/1.1425430.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-31B5-1
Abstract
The influence of the structure-dependent electronic effects on the magnetic, magneto-optical (MO), and anisotropic properties of equiatomic CoPt alloy was modeled with the use of fully relativistic linear-muffin-tin-orbital calculations. We found large differences between the MO spectra of the alloy of the AuCu (L1(1)) and CuPt (L1(0)) superlattice type structures, as well as a strong sensitivity of the spectra on the degree of chemical order. Very good agreement between the experimental and theoretical spectra for both a partially ordered and a fully disordered alloy, modeled by a Monte Carlo simulation, is found, demonstrating the applicability of the theoretical approach. (C) 2002 American Institute of Physics.