Ustinov V.V. – TechConnect Briefs

Nanostructure of Interfaces and Giant Magnetoresistance of Co/Cu Superlattices

Chuprakov S.A., Verhovsky S.V., Krinitsina T.P., Bannikova N.S., Blinov I.V., Milyaev M.A., Popov V.V., Ustinov V.V., Institute of Metal Physics, RU

The structure, the state of interfaces and magnetoresistance of [Co(1.5nm)/Cu(0.9nm)]n superlattices have been studied. The magnetoresistance decreases with the growth of n from 38% for n = 10 to 24% for n = 40. TEM [...]

X-ray Reflectometry of Planar Nanoheterostructures:a New Model-less Approach

Ustinov V.V., Babanov Yu.A., Salamatov Yu.A., Institute of Metal Physics, RU

X-ray reflectometry is a highly sensitive non-destructive method of the electron density profile determination in multilayer nanostructures. To evaluate the density variation with depth from the reflectivity data one uses traditionally the least squares method. [...]

Hysteresis-free spin valves for GMR sensors

Ustinov V.V., Milyaev M.A., Naumova L.I., Proglyado V.V., Krinitsina T.P., Institute of Metal Physics, RU

Top spin valves Ta/[FeNi/CoFe]/Cu/ CoFe/AFM/Ta based on antiferromagnetics (AFM) Fe50Mn50 and Mn75Ir25 with varying [Fe20Ni80/Co90Fe10] composite free layer parameters and Cu interlayer thickness were prepared by DC magnetron sputtering. GMR characteristics of spin valves (SV) [...]

Exchange Bias Formation Mechanism in (110)Al2O3/Py/Mn/Ta Nanostructures

Blinov I.V., Krinitsina T.P., Matveev S.A., Milyaev M.A., Popov V.V., Ustinov V.V., Institute of Metal Physics, RU

Magnetic multilayer nanostructures possessing exchange bias are of interest for spintronics as effective magnetic field sensors. The mechanism and conditions of the exchange bias formation in (110) Al2O3/Py(30nm)/Mn(100nm)/ Ta(10nm) nanostructures at thermal-magnetic treatment have been [...]