Ferromagnetic nanocomposites as spintronic materials with controlled magnetic structure
G.V. Lashkarev1, M.V. Radchenko1, M.E. Bugaiova1, W. Knoff2, T. Story2, Y.A. Stelmakh3, L.A. Krushynskaya3, A.I. Dmitriev1, V.I. Lazorenko1
1I. Frantsevich Institute for Problems of Material Science, National Academy of Sciences, 3 Krzhyzhanovsky Str., Kiev 03680, Ukraine
2Institute of Physics, Polish Academy of Sciences, 32/46 Al. Lotników, 02-668 Warsaw, Poland
3Институт электросварки им. Е.О. Патона НАН Украины, ул. Антоновича, 68, г. Киев, Украина pos Анотація:
Received Septemder 13, 2012
The physical properties of ferromagnetic dilute magnetic
semiconductors and nanocomposites are considered. The latter have several advantages as spintronic materials with a controlled magnetic structure for
weak magnetic field sensors. A characteristic feature of ferromagnetic nanocomposites is the spindependent
tunneling conductance, which is responsible for negative and positive magnetoresistance. The magnetoresistive effects have a wide range of applications. In particular, materials with such effects may be used in the development of magnetoresistive memory
devices, weak magnetic field sensors, medical diagnostic devices and other items of electronic equipment.
PACS: 72.20.Pа Thermoelectric and thermomagnetic effects; PACS: 72.80.Tm Composite materials; PACS: 73.90.+f Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures.