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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-cd167488-02ed-44c8-9e30-4f02a7715974

Czasopismo

Materials Science Poland

Tytuł artykułu

The effect of pressure and alloying on half-metallicity of quaternary Heusler compounds CoMnYZ (Z = Al, Ga, and In)

Autorzy Rahmoune, M.  Chahed, A.  Amar, A.  Rozale, H.  Lakdja, A.  Benhelal, O.  Sayede, A. 
Treść / Zawartość http://www.materialsscience.pwr.wroc.pl/
Warianty tytułu
Języki publikacji EN
Abstrakty
EN In this work, first-principles calculations of the structural, electronic and magnetic properties of Heusler alloys CoMnYAl, CoMnYGa and CoMnYIn are presented. The full potential linearized augmented plane waves (FP-LAPW) method based on the density functional theory (DFT) has been applied. The structural results showed that CoMnYZ (Z = Al, Ga, In) compounds in the stable structure of type 1+FM were true half-metallic (HM) ferromagnets. The minority (half-metallic) band gaps were found to be 0.51 (0.158), 0.59 (0.294), and 0.54 (0.195) eV for Z = Al, Ga, and In, respectively. The characteristics of energy bands and origin of minority band gaps were also studied. In addition, the effect of volumetric and tetragonal strain on HM character was studied. We also investigated the structural, electronic and magnetic properties of the doped Heusler alloys CoMnYGa1-xAlx, CoMnYAl1-xInxand CoMnYGa1-xInx(x = 0, 0.25, 0.5, 0.75, 1). The composition dependence of the lattice parameters obeys Vegard’s law. All alloy compositions exhibit HM ferromagnetic behavior with a high Curie temperature (TC).
Słowa kluczowe
EN density functional theory   quaternary Heusler compounds   half-metallic ferromagnetic   magnetism  
Wydawca Springer
Czasopismo Materials Science Poland
Rocznik 2016
Tom Vol. 34, No. 4
Strony 905--915
Opis fizyczny Bibliogr. 40 poz., rys., tab.
Twórcy
autor Rahmoune, M.
  • Condensed Matter and Sustainable Development Laboratory, University of Sidi Bel-Abbes, Sidi Bel-Abbes 22000, Algeria, rahmounemohammed@yahoo.fr
autor Chahed, A.
  • Condensed Matter and Sustainable Development Laboratory, University of Sidi Bel-Abbes, Sidi Bel-Abbes 22000, Algeria
autor Amar, A.
  • Condensed Matter and Sustainable Development Laboratory, University of Sidi Bel-Abbes, Sidi Bel-Abbes 22000, Algeria
autor Rozale, H.
  • Condensed Matter and Sustainable Development Laboratory, University of Sidi Bel-Abbes, Sidi Bel-Abbes 22000, Algeria
autor Lakdja, A.
  • Condensed Matter and Sustainable Development Laboratory, University of Sidi Bel-Abbes, Sidi Bel-Abbes 22000, Algeria
autor Benhelal, O.
  • Condensed Matter and Sustainable Development Laboratory, University of Sidi Bel-Abbes, Sidi Bel-Abbes 22000, Algeria
autor Sayede, A.
  • UCCS, CNRS-UMR 8181, Universite d’Artois, Facult ´ e des Sciences Jean Perrin, Rue Jean Souvraz, SP 18, ´ 62307 Lens Cedex, France
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Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-cd167488-02ed-44c8-9e30-4f02a7715974
Identyfikatory
DOI 10.1515/msp-2016-0120