- Tytuł:
- Magnetism of Nanoparticle $La_{0.7}Ca_{0.3}Mn_{0.7}Fe_{0.3}O_3$ under Applied Hydrostatic Pressure
- Autorzy:
-
Kusigerski, V.
Perovic, M.
Mrakovic, A.
Blanusa, J.
Mihalik, M.
Zentkova, M.
Spasojevic, V. - Powiązania:
- https://bibliotekanauki.pl/articles/1534028.pdf
- Data publikacji:
- 2010-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.50.Tt
75.75.-c
81.07.Bc - Opis:
- Nanoparticle $La_{0.7}Ca_{0.3}Mn_{0.7}Fe_{0.3}O_3$ with the average particle size of 10 nm was mechanochemically synthesized in the single-step procedure. Temperature and field dependences of magnetization were recorded under both ambient and applied hydrostatic pressure up to 0.47 GPa. At ambient pressure, two magnetic transition points were observed: one of the spin-glass like type at the temperature $T_{f}$ ≈ 34 K, and ferro-to-paramagnet transition at $T_{C}$ ≈ 51 K. Under the applied pressure magnetic parameters gradually changed: (i) both $T_{C}$ and $T_{f}$ were lowered with the increase in pressure; (ii) both high field magnetization $M_{5T}$ and remanent magnetization $M_{Rem}$ decreased with pressure; (iii) coercivity $H_{C}$ increased with pressure. The obtained results show that magnetism of a nanoparticle system with high degree of intrinsic disorder diminishes with the applied pressure that is in compliance with the effect of the increased cationic disorder ("internal pressure") in bulk manganites.
- Źródło:
-
Acta Physica Polonica A; 2010, 118, 5; 811-812
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki