• Aucun résultat trouvé

Effects of the stacking fault on free surfaceFePtL10

N/A
N/A
Protected

Academic year: 2021

Partager "Effects of the stacking fault on free surfaceFePtL10"

Copied!
1
0
0

Texte intégral

(1)

7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)

2016

Effects of the stacking fault on free surfaceFePt L10

Katia HAMMAR, Leila MESSAD, Ziane Abdelhamid

Abstract : Chemical ordered FePt L10, which is characterizedby a tetragonal distortion of a few percent along the c-axis,accompanied by an alternating stacking of elemental layers alongthe [001] direction, is attractive candidate for many advancedmagnetics material applications, such as high density magneticrecording media. The stacking fault effects on free surfaces wasexamined by first-principles calculations based on densityfunctional theory (DFT), within the pseudopotential plane wavemethod as implemented in VASP (Vienna Ab initio SimulationPackage). The projector augmented wave method with exchangecorrelation function is used for spin polarized generalizedgradient approximation (GGA). The layer atomic relaxation forfree surfaces show a compression on the relative displacementamount to about 1.35 %, 9.02 % for Fe and FeFe surfacesrespectively, the magnetic moment decrease about 3.90 % forFeFe surfaces.

Keywords : L1 0 FePt, FePt; stacking fault, free surfaces

Centre de Recherche en Technologies Industrielles - CRTI - www.crti.dz

Powered by TCPDF (www.tcpdf.org)

Références

Documents relatifs

Corrugation of bilayer h-BN as a func- tion of lateral interlayer shifts: (a) Energy surface calculated with respect to the AA 0 stacking mode using the PBE þ vdW approach.. The

(Color online) Charge densities of one conduction band state c 1 and two valence band states v 1,2 of a passivated GaN slab.. calculated with

In experiments with quenched aluminium it was demonstrated that faulted loops annealed out at a much faster rate than prismatic loops and that the increased

than AD (lens shape I), there will be more dislocations P parallel to AB than to AD. - Consequently there is a preferential orientation in the arrangement of those

An in-house made Loschmidt diffusion cell was employeed to measure the effective coefficient of binary gas diffusion through cathode catalyst layers of PEM fuel cells. Each CCL

C’est le facteur essentiel dans cette étude. L’intensité globale du rayonnement solaire arrivant aux confins de l’atmosphère sur une surface perpendiculaire est constante,

Our result confirms the only previous study performed in a flow tube reactor with deliquescent NaCl particles (Ab- batt et al., 1998), where a lower limit of 0.2 was reported for

Céline Dalle, Cédric Mendes, Isabelle Canet, Martine Sancelme, Marie Lagrée, Mounir Traïkia, Anne-Marie Delort, Pierre Amato, Cyril Jousse.. To cite