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|Type:||Artigo de periódico|
|Title:||The Influence Of Quenching Rate On Magnetic Properties Of Amorphous Ribbons|
Sato Turtelli R.
|Abstract:||Five sets of amorphous ribbons of the composition Fe73.5Cu 1Nb3Si13.5B9 produced with different quenching rates (QR) were studied in order to verify the influence of the topological disorder on magnetic properties. For this purpose several magnetic methods were applied. Significant differences have been found between the results of magnetic disaccommodation He·Δμ/μ, pinning field Hp and stress dependence of the magnetic permeability μ/μ0(σ) of as-cast materials produced at different QR. The values of He·Δμ/μ and Hp are directly proportional to the disorder degree of the samples. The μ/μ0(σ) curves display broad maxima, which are found to be related to the quenched-in stresses. In contrast with these results, no significant effects of the amorphous structure on the Curie temperature and Mössbauer spectra were found, because other parameters are dominating.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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