- Tytuł:
- Exchange Bias in Iron-Oxide Particles Nanocasted in Periodic Porous Silica
- Autorzy:
-
Zeleňáková, A.
Kováč, J.
Zeleňák, V. - Powiązania:
- https://bibliotekanauki.pl/articles/1810584.pdf
- Data publikacji:
- 2009-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
61.46.Df
68.37.Lp
75.20.-g
75.30.Cr - Opis:
- Iron-oxide nanoparticles were nanocasted in the periodic mesoporous silica matrix, consisting of two-dimensional hexagonally ordered channel system with the mean diameter of the channels about 7 nm. The magnetic measurements of dc magnetization confirm behavior typical of a superparamagnetic system, such as the irreversibility of the zero-field-cooled and field-cooled curves, presence of a maximum in zero-field-cooled curve related with blocking temperature $T_C$ and revealing of coercivity $H_C$ below $T_C$. The existence of negative exchange bias effect below $T_C$ was confirmed in our system represented by value of exchange bias field $H_{EB}$=-970 Oe measured at the temperature 2 K.
- Źródło:
-
Acta Physica Polonica A; 2009, 115, 1; 357-359
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł