Autor: Donchev, T. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: La$\text{}_{0.7}$Sr$\text{}_{0.3}$MnO$\text{}_{3}$ Thin-Film Grain-Boundary Junctions on a Bi-Crystal Substrate
Autorzy:: Gierłowski, P.
Szewczyk, A.
Abal'oshev, A. V.
Vlakhov, E. S.
Donchev, T. I.
Blagoev, B.
Powiązania:: https://bibliotekanauki.pl/articles/2041462.pdf
Data publikacji:: 2004-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.47.Lx
75.47.Gk
72.25.Mk
Opis:: Transport properties of 10μm to 30μm wide grain-boundary junctions ion-etched in thin colossal magnetoresistance La$\text{}_{0. 7}$Sr$\text{}_{0.3}$MnO$\text{}_{3}$ films deposited on a SrTiO$\text{}_{3}$ bi-crystal were investigated. We have measured the current-voltage characteristics in the temperature range from 4.2 K to 300 K without applied magnetic field, as well as the magnetoresistance at magnetic fields up to±10 kOe directed parallel to the film surface, both perpendicular and parallel to the direction of current flow through the junctions. The investigated junctions have nonlinear current-voltage characteristics in this temperature range and consist of several magnetic domains. The maximum magnetoresistance (R(H)-R $\text{}_{max}$)/R$\text{}_{max}$, measured at 1 kOe was -17.6% at 4.1 K.
Źródło:: Acta Physica Polonica A; 2004, 106, 5; 715-719
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: On the theorem of Filippov-Pliś and some applications
Autorzy:: Donchev, T.
Farkhi, E.
Powiązania:: https://bibliotekanauki.pl/articles/970906.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: differential inclusions
one-sided
Lipschitz
Filippov
Plis
Opis:: In the paper some known and new extensions of the famous theorem of Filippov (1967) and a theorem of Plis (1965) for differential inclusions are presented. We replace the Lipschitz condition on the set-valued map in the right-hand side by a weaker onesided Lipschitz (OSL), one-sided Kamke (OSK) or a continuity-like condition (CLC). We prove new Filippov-type theorems for singularly perturbed and evolution inclusions with OSL right-hand sides. In the CLC case we obtain two extended theorems, one of which implies directly the relaxation theorem. We obtain also a theorem in Banach spaces for OSK multifunctions. Some applications to exponential formulae are surveyed.
Źródło:: Control and Cybernetics; 2009, 38, 4A; 1251-1271
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

Artykuł

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