Showing papers by "Sergey M. Zharkov published in 2008"
TL;DR: In this article, it was shown that the NiAl shape memory alloy thin films can be formed directly during the synthesis without need for lengthy heat treatment, and that the films obtained reveal a two-way shape memory effect.
Abstract: NiAl shape memory alloy thin films have been fabricated by a solid-state reaction in Al/Ni bilayer films. Two kinds of synthesis have been used. The first one consists in heating an Al/Ni bilayer film system to temperatures above 480 K. The second one implies the successive deposition of nickel and aluminum films onto a substrate with a temperature above 480 K. Regardless of a kind of the solid-state synthesis, the films obtained reveal a two-way shape memory effect. It is supposed that the solid-state reaction in Al/Ni bilayers starts at a temperature AS of the reverse of the martensitic transition in NiAl alloy. This indicates that the NiAl shape memory alloy thin films can be formed directly during the synthesis without need for lengthy heat treatment.
15 citations
TL;DR: In this paper, the magnetic properties and magneto-optical effects in nanocomposites based on Co-Sm-O films prepared through pulsed plasma sputtering of a SmCo5 target are investigated.
Abstract: The magnetic properties and magneto-optical effects in nanocomposites based on Co-Sm-O films prepared through pulsed plasma sputtering of a SmCo5 target are investigated. It is shown that, depending on the technological conditions and regimes of subsequent annealing, the films can have different structures from cobalt nanoparticles distributed in the dielectric samarium oxide matrix with a magnetic phase volume of more than 60% to a continuous polycrystalline cobalt film with embedded samarium oxide nanoparticles. The evolution of the spectra of the magneto-optical Kerr effect and the field dependences of the magnetization is studied as a function of the film structure.
1 citations