Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Polishchuk, D."'
Autor:
Polishchuk, D. M., Tykhonenko-Polishchuk, Yu. O., Lytvynenko, Ya. M., Rostas, A. M., Kuncser, V., Kravets, A. F., Tovstolytkin, A. I., Gomonay, O. V., Korenivski, V.
We investigate the interlayer coupling between two thin ferromagnetic (F) films mediated by an antiferromagnetic (AF) spacer in F*/AF/F trilayers and show how it transitions between different regimes on changing the AF thickness. Employing layer-sele
Externí odkaz:
http://arxiv.org/abs/2303.09301
Ferromagnetic/antiferromagnetic bilayers are interfaced with normal metal/ferromagnetic bilayers to form F*/AF/N/F valves. The N-spacer thickness is chosen such that it mediates strong indirect exchange (RKKY) between the outer magnetic layers, which
Externí odkaz:
http://arxiv.org/abs/2210.17082
We study magnetic multilayers, incorporating dilute ferromagnetic spacers between strongly-ferromagnetic layers exhibiting a proximity-enhanced magnetocaloric effect. Using magnetometry and direct measurements of the adiabatic temperature change base
Externí odkaz:
http://arxiv.org/abs/2208.07761
Autor:
Polishchuk, D. M., Persson, M., Kulyk, M. M., Holmgren, E., Pasquale, G., Ullah, A., Skomski, R., Korenivski, V.
The magnetocaloric effect in exchange-coupled synthetic-antiferromagnet multilayers is investigated experimentally and theoretically. We observe a temperature-controlled inversion of the effect, where the entropy increases on switching the individual
Externí odkaz:
http://arxiv.org/abs/2109.06946
Autor:
Borynskyi, V. Yu., Polishchuk, D. M., Melnyk, A. K., Kravets, A. F., Tovstolytkin, A. I., Korenivski, V.
We investigate spin dynamics in nanodisc arrays of synthetic-antiferromagnets (SAF) made of Py/NiCu/Py trilayers, where the NiCu spacer undergoes a Curie transition at about 200 K. The observed ferromagnetic resonance spectra have three distinct reso
Externí odkaz:
http://arxiv.org/abs/2108.10581
Autor:
Polishchuk, D. M., Nakonechna, O. I., Lytvynenko, Ya. M., Kuncser, V., Savina, Yu. O., Pashchenko, V. O., Kravets, A. F., Tovstolytkin, A. I., Korenivski, V.
The magnetic properties of thin-film multilayers [Fe/Py]/FeMn/Py are investigated as a function of temperature and thickness of the antiferromagnetic FeMn spacer using SQUID magnetometry. The observed behavior differs substantially for the structures
Externí odkaz:
http://arxiv.org/abs/2104.06146
Autor:
Tykhonenko-Polishchuk, Yu O, Polishchuk, D M, Polek, T I, Yaremkevych, D D, Kravets, A F, Tovstolytkin, A I, Timoshevskii, A N, Korenivski, V
We investigate the spin transport and ferromagnetic resonance properties of giant magnetoresistive (GMR) Co/Cu-Ni multilayers with variable levels of Ni doping in the Cu spacer. We present an experimental evidence for a magnetic-to-diamagnetic transi
Externí odkaz:
http://arxiv.org/abs/1808.06198
Autor:
Polishchuk, D. M., Tykhonenko-Polishchuk, Yu. O., Holmgren, E., Kravets, A. F., Tovstolytkin, A. I., Korenivski, V.
Publikováno v:
Phys. Rev. Materials 2, 114402 (2018)
Indirect exchange coupling in magnetic multilayers, also known as the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, is known to be highly effective in controlling the interlayer alignment of the magnetization. This coupling is typically fixed at
Externí odkaz:
http://arxiv.org/abs/1808.01291
Autor:
Polishchuk, D. M., Tykhonenko-Polishchuk, Yu. O., Borynskyi, V. Yu., Kravets, A. F., Tovstolytkin, A. I., Korenivski, V.
Mechanisms of the recently demonstrated ex-situ thermal control of the indirect exchange coupling in magnetic multilayer are discussed for different designs of the spacer layer. Temperature-induced changes in the hysteresis of magnetization are shown
Externí odkaz:
http://arxiv.org/abs/1801.05311
We investigate switching of magnetic tunnel junctions (MTJs) driven by the thermal effect of the transport current through the junctions. The switching occurs in a specially designed composite free layer, which acts as one of the MTJ electrodes, and
Externí odkaz:
http://arxiv.org/abs/1710.06311