CobaltMaghrebV1, Main, Exploration, bibRecord, 000A62

Ferromagnetic and antiferromagnetic couplings in Cr(0 0 1) thin films and TM monolayer/Cr(0 0 1) (TM = Ti, V, Cr, Mn, Fe, Co, Ni)

Identifieur interne : 000A62 ( Main/Exploration ); précédent : 000A61; suivant : 000A63

Ferromagnetic and antiferromagnetic couplings in Cr(0 0 1) thin films and TM monolayer/Cr(0 0 1) (TM = Ti, V, Cr, Mn, Fe, Co, Ni)

Auteurs : A. Kellou [Algérie] ; N. E. Fenineche [France] ; A. Tadjer [Algérie] ; H. Aourag [Algérie, France]

Source :

Materials chemistry and physics [ 0254-0584 ] ; 2003.

RBID : Pascal:03-0305008

Descripteurs français

Pascal (Inist)
- Couche mince, Couche mince magnétique, Accouplement magnétique, Chrome, Couche monomoléculaire, Titane, Vanadium, Manganèse, Fer, Ferromagnétisme, Antiferromagnétisme, Etude expérimentale, Cobalt, Nickel, 7570A.
Wicri :
- topic : Chrome, Titane, Vanadium, Manganèse, Fer, Cobalt, Nickel.

English descriptors

KwdEn :
- Antiferromagnetism, Chromium, Cobalt, Experimental study, Ferromagnetism, Iron, Magnetic coupling, Magnetic thin films, Manganese, Monolayers, Nickel, Thin films, Titanium, Vanadium.

Abstract

Magnetic and electronic properties of Cr(001) thin films and transition metal monolayer (TM = Ti, V, Cr, Mn, Fe, Co, and Ni) on Cr(0 0 1) substrate are reported and discussed within the framework of first principle method based on density functional theory (DFT). In our calculations, we have considered two possible spin orientations leading to ferromagnetic (FM) and antiferromagnetic (AFM) coupling. The surface energy of Cr(0 1) is given and compared to experimental 4d metals values. Also, total and formation energies, total and local magnetic moments of TM/Cr(001) are determined for both ferromagnetic and antiferromagnetic configurations and compared to other works. Thus, Cr layers in Cr(00 1) thin films remain antiferromagnetically coupled, as in bulk Cr or Cr₂ molecule. The same behavior is found for Ti, V, and Cr in TM/Cr(00 1), quite the opposite, Mn, Fe, Co, and Ni prefer to be ferromagnetically coupled to Cr subsurface layer, and only Mn and Fe in the ferromagnetic coupling have induced a spin-switch in all Cr layers. We have also reported the polarized densities of states of each layer in the ground state of TM/Cr(0 01) systems, showing the same behavior as concluded from energy and magnetic results.

Affiliations:

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Le document en format XML

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<term>Iron</term>
<term>Magnetic coupling</term>
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<term>Couche monomoléculaire</term>
<term>Titane</term>
<term>Vanadium</term>
<term>Manganèse</term>
<term>Fer</term>
<term>Ferromagnétisme</term>
<term>Antiferromagnétisme</term>
<term>Etude expérimentale</term>
<term>Cobalt</term>
<term>Nickel</term>
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<front><div type="abstract" xml:lang="en">Magnetic and electronic properties of Cr(001) thin films and transition metal monolayer (TM = Ti, V, Cr, Mn, Fe, Co, and Ni) on Cr(0 0 1) substrate are reported and discussed within the framework of first principle method based on density functional theory (DFT). In our calculations, we have considered two possible spin orientations leading to ferromagnetic (FM) and antiferromagnetic (AFM) coupling. The surface energy of Cr(0 1) is given and compared to experimental 4d metals values. Also, total and formation energies, total and local magnetic moments of TM/Cr(001) are determined for both ferromagnetic and antiferromagnetic configurations and compared to other works. Thus, Cr layers in Cr(00  1) thin films remain antiferromagnetically coupled, as in bulk Cr or Cr<sub>2</sub>
 molecule. The same behavior is found for Ti, V, and Cr in TM/Cr(00 1), quite the opposite, Mn, Fe, Co, and Ni prefer to be ferromagnetically coupled to Cr subsurface layer, and only Mn and Fe in the ferromagnetic coupling have induced a spin-switch in all Cr layers. We have also reported the polarized densities of states of each layer in the ground state of TM/Cr(0 01) systems, showing the same behavior as concluded from energy and magnetic results.</div>
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Ferromagnetic and antiferromagnetic couplings in Cr(0 0 1) thin films and TM monolayer/Cr(0 0 1) (TM = Ti, V, Cr, Mn, Fe, Co, Ni)

Ferromagnetic and antiferromagnetic couplings in Cr(0 0 1) thin films and TM monolayer/Cr(0 0 1) (TM = Ti, V, Cr, Mn, Fe, Co, Ni)

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri