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Electronic structure and magnetic properties of 2Fe/Pd and 2Pd/Fe multilayers

Identifieur interne : 000C62 ( Main/Exploration ); précédent : 000C61; suivant : 000C63

Electronic structure and magnetic properties of 2Fe/Pd and 2Pd/Fe multilayers

Auteurs : A. V. Dos Santos [Brésil] ; C. A. Kuhnen [Brésil]

Source :

RBID : ISTEX:E54E3C424097E1150F5476EF637BE7BD1917212D

Abstract

In the present work the magnetic and electronic structure of 2Fe/Pd and 2Pd/Fe multilayers are analyzed by means of the linear muffin-tin orbital method (LMTO). The calculations were carried out for several lattice parameters in order to obtain the total energy as a function of the volume. At the theoretical equilibrium volume, we found a high magnetic moment at Fe sites for 2Pd/Fe (μFe∼3.0μB) and 2Fe/Pd (μFe∼2.7μB) multilayers. The analysis of the density of states at equilibrium gives a good understanding of the behavior of the 2Fe/Pd and 2Pd/Fe magnetization. The hyperfine field at iron nuclei is near −39.0T for 2Pd/Fe multilayer and has a lower value (−21.0T) for 2Fe/Pd system.The results for the magnetic moments and hyperfine parameters at different lattice spacing show a strong dependence of the magnetic properties of the 2Fe/Pd system with pressure.


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DOI: 10.1016/S0304-8853(97)01069-X


Affiliations:


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<div type="abstract" xml:lang="en">In the present work the magnetic and electronic structure of 2Fe/Pd and 2Pd/Fe multilayers are analyzed by means of the linear muffin-tin orbital method (LMTO). The calculations were carried out for several lattice parameters in order to obtain the total energy as a function of the volume. At the theoretical equilibrium volume, we found a high magnetic moment at Fe sites for 2Pd/Fe (μFe∼3.0μB) and 2Fe/Pd (μFe∼2.7μB) multilayers. The analysis of the density of states at equilibrium gives a good understanding of the behavior of the 2Fe/Pd and 2Pd/Fe magnetization. The hyperfine field at iron nuclei is near −39.0T for 2Pd/Fe multilayer and has a lower value (−21.0T) for 2Fe/Pd system.The results for the magnetic moments and hyperfine parameters at different lattice spacing show a strong dependence of the magnetic properties of the 2Fe/Pd system with pressure.</div>
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