CHANGE OF D/T//c RATIO DURING HEAT TREATMENT OF Fe//9//0// minus //xSi//xB//1//0 AMORPHOUS ALLOY.

Wladyslaw Minor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The ferromagnetic transition temperature T//c for Fe-Si-B amorphous alloys with iron concentration exceeding 75 atomic percent changes monotonically with the annealing time. This change of T//c is accompanied by a drastic change of the magnetic excitation spectrum measured by means of low angle neutron inelastic scattering. It was observed that a small amount of alpha -Fe(Si) precipitated in an amorphous matrix during the heat treatment even at relatively low temperatures, leading to a decrease of the spin-wave stiffness constant D. Because at the same time T//c increases, the D/T//c ratio (which is about 0. 3 for 'as quenched' Fe-Si-B system) decreases abruptly.

Original languageEnglish
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsM. Tenhover, W.L. Johnson, L.E. Tanner
PublisherMaterials Research Soc
Pages151-156
Number of pages6
ISBN (Print)0931837456
StatePublished - 1987
Externally publishedYes

Publication series

NameMaterials Research Society Symposia Proceedings
Volume80
ISSN (Print)0272-9172

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