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1999 | 95 | 2 | 287-296
Article title

Gradually Devitrified Co-Based Metallic Glass As a Model Material for Testing Néel's Theory of the Rayleigh Rule

Content
Title variants
Languages of publication
EN
Abstracts
EN
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_{c}a (where H_{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.
Keywords
EN
Year
Volume
95
Issue
2
Pages
287-296
Physical description
Dates
published
1999-02
received
1998-11-11
(unknown)
1998-12-23
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv95z210kz
Identifiers
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