Autor: Kudryavtsev, Yu. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ferromagnetic Resonance in Very Fine Co Particles forming Granular Co-Cu Films
Autorzy:: Dubowik, J.
Kudryavtsev, Yu. V.
Powiązania:: https://bibliotekanauki.pl/articles/1955442.pdf
Data publikacji:: 1997-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Tt
76.50.+g
Opis:: Ferromagnetic resonance was investigated in heterogeneous Co-Cu thin films consisting of randomly oriented fine Co particles embedded in Cu matrix. The experimental spectra are modelled using dynamic susceptibility approach assuming a broad distribution in particle sizes and dipolar interactions between particles.
Źródło:: Acta Physica Polonica A; 1997, 91, 2; 249-252
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Exchange Bias in Ni-Mn-Sn Heusler Alloy Films
Autorzy:: Gościańska, I.
Załęski, K.
Głowiński, H.
Kudryavtsev, Yu.
Dubowik, J.
Powiązania:: https://bibliotekanauki.pl/articles/1427549.pdf
Data publikacji:: 2012-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.70.Ak
75.30.Et
Opis:: We report a relatively large exchange bias effect observed for the first time in Ni-Mn-Sn thin films with different microstructure and composition: a $Ni_{50}Mn_{36}Sn_{14}$ epitaxial film (A), a $Ni_{50}Mn_{43}Sn_7$ film which is phase decomposed (B), and a $NiMn//Ni_{50}Mn_{25}Sn_{25}$ bilayer (C). Despite the samples differ markedly in both microstructure and composition $H_{EB}$ does not substantially differs at 5 K. Exchange bias decreases with increasing T approximately as $H_{EB}$ (T) ∝ $H_{EB}$ (5K)/T with $H_{EB}$ (5K) of 180 Oe and 60 Oe for sample B and C, respectively and almost linearly for sample A with $H_{EB}$ (5K) = 65 Oe. Blocking temperature where the exchange bias vanishes is 40, 50 and 80 K for sample A, C and B, respectively. The results suggest that the role of AFM/FM interfaces is not substantial in formation of exchange bias in Ni-Mn-Sn Heusler alloy films and exchange bias is rather related to AFM/FM interactions in nanoscale.
Źródło:: Acta Physica Polonica A; 2012, 121, 5-6; 1179-1181
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Annealing Effect of Equiatomic Co/Pt Alloy Films
Autorzy:: Gontarz, R.
Luciński, T.
Uba, L.
Uba, S.
Kudryavtsev, Yu. V.
Powiązania:: https://bibliotekanauki.pl/articles/1930605.pdf
Data publikacji:: 1994-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.40.Ef
75.70.Fr
61.50.Ks
Opis:: Polycrystalline as-sputtered CoPt alloy films near the equiatomic composition were characterized as consisting of a disordered fcc phase with preferred texture along [111] orientation perpendicular to the film plane. The film annealing at 600°C/16 h induces the disorder-order phase transition confirmed by X-ray diffraction. As a result of the transition an appearance of the ordered tetragonal (fct) phase of AuCuI type with c/a = 0.974 is observed. The c-axis is the easy axis of magnetization. Both longitudinal and polar Kerr hysteresis loops reveal a dramatic increase in the coercivity from 0.1 to 4.5 kOe in annealed CoPt alloy films due to ordering.
Źródło:: Acta Physica Polonica A; 1994, 85, 2; 427-431
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Complex Magnetic Structure of Strongly Coupled Fe/Si Multilayers
Autorzy:: Dubowik, J.
Stobiecki, F.
Szymański, B.
Kudryavtsev, Yu. V.
Grabias, A.
Kopcewicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/2013056.pdf
Data publikacji:: 2000-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.70.-i
68.55.-a
76.50.+g
Opis:: Fe/Si multilayers with strong bilinear and biquadratic couplings were investigated. A complex structure revealed by the Mössbauer spectroscopy corresponds to multimode ferromagnetic resonance spectra in a non-saturated state. Simple dispersion relations for antiferromagnetic coupled bilayer structures are shown to be inapplicable to the Fe/Si multilayers with a strong biquadratic component to the antiferromagnetic bilinear coupling.
Źródło:: Acta Physica Polonica A; 2000, 97, 3; 451-454
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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