Structural and magnetic properties of Co₂MnSi thin films

Abstract

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. (20, 50, and 100 nm) were grown by radio frequency (RF) sputtering on a-plane sapphire substrates. Our X-rays diffraction (XRD) study shows that, in all the samples, the cubic h110i CMS axis is normal to the substrate and that six well defined preferential in-plane orientations are present. Static and dynamic magnetic properties were investigated using vibrating sample magnetometry (VSM) and microstrip line ferromagnetic resonance (MS-FMR), respectively. From the resonance measurements versus the direction and the amplitude of an applied magnetic field, most of the magnetic parameters are derived, i.e.: the magnetization, the gyromagnetic factor, the exchange stiffness coefficient, and the magnetic anisotropy terms. The in-plane anisotropy results from the superposition of two terms showing a twofold and a fourfold symmetry, respectively. The observed behavior of the hysteresis loops is in agreement with this complex form of the in-plane anisotropy.

First-principles calculation of the effects of partial alloy disorder on the static and dynamic magnetic properties ofCo2MnSi

“…Values of the Landé factor measured in experiments for Co 2 MnSi samples are ranging from 2.00 to 2.06, according to Refs. [72][73][74]. These values are of the same order of magnitude as our calculated data.…”

Alternating current susceptibility and magnetisation of nanocrystalline Co2MnSi Heusler alloy films

“…Various deposition techniques such as magnetron sputtering [9][10][11], molecular beam epitaxy [12], laser ablation [8] and plasma-assisted sputtering [13] have been employed for the growth of the CMS films using various substrates such as crystalline Si [5,9,11], Al 2 O 3 [6,14], MgO [6,8], GaAs [15], Ge [12] and amorphous glass [7].…”

Perpendicular magnetic anisotropy in the Heusler alloy Co2TiSi/GaAs(001) hybrid structure

“…[14][15][16][17] The intrinsic magnetic anisotropy of the well-known FHA films has been found to be dominated by the in-plane anisotropy. [16][17][18] Very recently, the interface-induced PMA was discovered in a Co-based FHA (Co 2 FeAl) in contact with a MgO oxide layer. 19,20 The proposed explanation for the PMA is similar to that of CoFeB or Fe/MgO systems for which interfacial anisotropy induced by hybridization of Fe-, Co-3d and O-2p orbitals causes the a Electronic email: dau@pdi-berlin.…”