Autor: Dyakonov, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Magnetocaloric Effect in $La_{0.8}Sr_{0.2}MnO_{3}$ Film
Autorzy:: Szymczak, R.
Dyakonov, K.
Radelytskyi, I.
Dyakonov, V.
Szymczak, H.
Powiązania:: https://bibliotekanauki.pl/articles/1402317.pdf
Data publikacji:: 2015-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.Sg
75.47.Lx
75.70.Ak
Opis:: Thin epitaxial film of $La_{0.8}Sr_{0.2}MnO_{3}$ has been deposited on yz-cut $LiNbO_{3}$ by pulsed laser ablation. The film was characterized by X-ray diffraction and magnetic measurements as a single phase. The magnetic properties and the magnetocaloric effect have been measured as a function of magnetic field and temperature. A reasonably high magnetocaloric effect indicates that this film might provide an efficient material for micro magnetic refrigerators.
Źródło:: Acta Physica Polonica A; 2015, 128, 1; 56-58
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Surface Magnetic Anisotropy of Epitaxial La$\text{}_{0.7}$Mn$\text{}_{1.3}$O$\text{}_{2.84}$ Thin Films
Autorzy:: Aleshkevych, P.
Baran, M.
Dyakonov, V.
Szymczak, R.
Szymczak, H.
Baberschke, K.
Lindner, J.
Lenz, K.
Powiązania:: https://bibliotekanauki.pl/articles/2046886.pdf
Data publikacji:: 2006-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.50.+g
75.70.-i
Opis:: A spin-wave resonance technique was used to collect information on elementary magnon excitations in high quality epitaxial La$\text{}_{0.7}$Mn$\text{}_{1.3}$O$\text{}_{2.84}$ films prepared by dc-magnetron sputtering. It was found that besides bulk spin-wave modes, the spin-wave resonance spectrum includes also the surface spin waves. The value of spin-wave stiffness constant D=156 meV·Å$\text{}^{2}$ was found. The values of the surface magnetic anisotropy on both surfaces and their angular dependence were determined. The experimentally found spin-wave resonance spectra were explained based on the surface-inhomogeneity model. The effect of surface anisotropy on the spin-wave excitation conditions in epitaxial La$\text{}_{0.7}$Mn$\text{}_{1.3}$O$\text{}_{2.84}$ films was investigated. Spin-wave resonance data give an indirect evidence of periodic charge-ordered stripes formation.
Źródło:: Acta Physica Polonica A; 2006, 110, 1; 57-70
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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