- Tytuł:
- Low-Temperature Magnetic Properties of Nanometric Fe-Based Particles
- Autorzy:
-
David, B.
Schneeweiss, O.
Šantavá, E.
Alexandrescu, R.
Morjan, I. - Powiązania:
- https://bibliotekanauki.pl/articles/1813905.pdf
- Data publikacji:
- 2008-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.16.Mk
82.30.Lp
75.50.Bb
75.75.+a
61.05.Qr - Opis:
- Fe-based nanoparticles were prepared by laser-driven pyrolysis. The as-synthesised powder consists ofα-Fe and $Fe_3O_4//γ-Fe_2O_3$ nanoparticles embedded in a pyrolytic carbon matrix. The crystallite size of 1.8 nm forα-Fe was calculated using the Scherrer formula. The as-synthesised nanopowder was superparamagnetic. The maximum of the zero-field cooling curve was observed at 32 K and the distribution of blocking temperatures $g(T_B)$ peaked at 11 K. As a result of small particle sizes and the soft matrix, the Lamb-Mössbauer factor f was significantly higher at 4 K than at 293 K.
- Źródło:
-
Acta Physica Polonica A; 2008, 113, 1; 561-564
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł