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arXiv · 1204.5845

Magnetism: the Driving Force of Order in CoPt. A First-Principles Study

Sondes Karoui·Hakim Amara·Bernard Legrand·François Ducastelle
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Abstract

CoPt or FePt equiatomic alloys order according to the tetragonal L10 structure which favors their strong magnetic anisotropy. Conversely magnetism can influence chemical ordering. We present here {\it ab initio} calculations of the stability of the L10 and L12 structures of Co-Pt alloys in their paramagnetic and ferromagnetic states. They show that magnetism strongly reinforces the ordering tendencies in this system. A simple tight-binding analysis allows us to account for this behavior in terms of some pertinent parameters.

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Sondes Karoui, Hakim Amara, Bernard Legrand, François Ducastelle. 2012-04-26. Magnetism: the Driving Force of Order in CoPt. A First-Principles Study. https://doi.org/10.1088/0953-8984%2F25%2F5%2F056005

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