6533b7d5fe1ef96bd126467e

RESEARCH PRODUCT

Thermal stability of magnetic characteristics of Co/Ag/Fe and Co/Ag/Fe20Ni80 spin-valve structures

О. V. PylypenkoМ.H. DemydenkoМ.H. DemydenkoSerhii Ivanovych ProtsenkoI. M. PazukhaО. V. FedchenkoО. V. FedchenkoLarysa Valentynivna OdnodvoretsIa. M. Lytvynenko

subject

010302 applied physicsMaterials scienceSpin valveIntermetallicAnalytical chemistry02 engineering and technologyCoercivity021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesSurfaces Coatings and FilmsNuclear magnetic resonanceImpuritySputtering0103 physical sciencesThermal stabilityThin film0210 nano-technologyInstrumentationSolid solution

description

Abstract We investigated the thermal stability of magnetic characteristics of Co/Ag/Fe and Co/Ag/Fe 20 Ni 80 spin-valve structures. Thin film systems were obtained with the help of sputtering method. For the first type of systems two particular thicknesses ( d ML  = 3 and 20 nm) and different disposition of magnetic layers (ML) were used. For the second type different thickness of Ag ( d NML ) spacer layer was used. The research of the crystal structure was performed with the transmission electron microscope. The results demonstrate that every investigated as-deposited sample does not include solid solutions, intermetallic compounds or impurities. It has been found that among the spin-valve structures of the first type the ones with relatively thick Co layer are the most stable. Replacing Fe layer with Fe 20 Ni 80 leads to the improvement in thermal stability of magnetic properties at high temperatures (up to 750 K).

yearjournalcountryeditionlanguage
2017-09-01Vacuum
https://doi.org/10.1016/j.vacuum.2017.05.034