- Tytuł:
- Gradually Devitrified Co-Based Metallic Glass As a Model Material for Testing Néels Theory of the Rayleigh Rule
- Autorzy:
-
Lachowicz, H. K.
Popławski, F.
Kane, S. N.
Kuźmiński, M.
Kulik, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1995188.pdf
- Data publikacji:
- 1999-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.50.Kj
75.60.Ej - Opis:
- It is shown in the present paper that gradually devitrified Co-based non-magnetostrictive metallic glass is an excellent model material to verify Louis Néel's theory of the Rayleigh rule. In the course of the calculations, Néel showed that the parameter p=bH$\text{}_{c}$a (where H$\text{}_{c}$ is the coercivity, a and b are the coefficients of a quadratic polynomial expressing the Rayleigh rule) is expected to range between 0.6 (hard magnets) and 1.6 (soft). However, the experimental values of this parameter, reported in the literature for a number of mono- and poly-crystalline magnets, are much greater than those expected from the theory presented by Néel (in some cases even by two orders of magnitude). The measurements, performed for a series of Co-based metallic glass samples annealed at gradually increasing temperature to produce nanocrystalline structures with differentiated density and size of the crystallites, have shown that the calculated values of the parameter p fall within the range expected from Néel theory.
- Źródło:
-
Acta Physica Polonica A; 1999, 95, 2; 287-296
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł