Abstract
In present work we were analysing thin layers of Ni-Co-Mn-In alloys, grown by pulsed laser deposition method (PLD) on Si, NaCl and glass substrates. For target ablation the second harmonics of YAG:Nd 3+ laser was used. The target had the composition Ni 45 Co 5 Mn 34.5 In 14.5 . The morphology of the layers and composition were studied by electron microscopy TESCAN Vega3 equipped with microanalyzer EDS – Easy EdX system working with Esprit Bruker software. The X-ray diffraction measurements (XRD), performed on spectrometer Bruker XRD D8 Advance system, reveals Ni 2 -Mn-In cubic phase having lattice constant a = 6.02A.
Highlights
A phenomenon of a giant magnetoresistance (GMR) and a phenomenon of a tunnel magnetoresistance (TMR) in structures of a magnetic layer/layer of metal /magnetic layer are used for spintronics purposes
Composition and morphology of the films were investigated by scanning electron microscope Tescan Vega3, which was equipped in energy dispersive X-ray spectroscopy (EDS) analyser
3.1 Morphology and composition The obtained layers are very smooth by visual inspection
Summary
A phenomenon of a giant magnetoresistance (GMR) and a phenomenon of a tunnel magnetoresistance (TMR) in structures of a magnetic layer/layer of metal (or a dielectric) /magnetic layer are used for spintronics purposes. Heusler alloys which base on Mn-Ge [1, 2], Mn-Si [3] or CoMnSi [4] are very promising. Heusler alloys having nonordinary properties like high perpendicular magnetic anisotropy, low damping constant or half-metallicy could be useful in spintronic as well [5]. The strong magnetic and structural nonhomogeneity in this compound may be the source of GMR[7]. We have applied pulsed laser deposition method (PLD) [9] for layers fabrication, which is a low temperature method what ensures the abrupt interfaces [10]. PLD is non equilibrium method what can maintain the composition of the target in the layer [11]
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