Amorphous and metastable Fe1−xSix alloys and compounds prepared by solid-state synthesis

Pekka Ruuskanen

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Metastable amorphous and crystalline Fe1−xSix alloys and compounds were synthesized in an argon atmosphere with and without hexane, using a solid-state alloying method in a composition range of 0.1 < x < 0.4. Systems alloyed with hexane formed a single-phase amorphous structure with a composition range of 0.1 < x < 0.2. The Curie temperature of the amorphous phase decreased from 376 to 173 °C, and that of the crystalline phase from 722 to 517 °C as a function of x. The carbon content of the powder alloyed with hexane increased during the alloying time, reaching a maximum value of 8 wt% after 350 h of milling. It is concluded that carbon increases the tendency for the formation of amorphous phase. The Fe1−xSix system synthesized without hexane includes an amorphous phase together with crystalline FeSi and Fe2Si, with the composition range of 0.3 < x < 0.4. Solid solution exists in the composition range of 0.1 < x < 0.2. Curie temperatures decreased from 716 to 544 °C in crystalline phases and from 330 to 115 °C in the amorphous phases as a function of x.

Original languageEnglish
Pages (from-to)629-632
JournalJournal of Non-Crystalline Solids
Volume205 - 207
Issue numberPart 2
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

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