Microstructure and magnetic properties of Cu-Ag-La-Fe immiscible alloys with an amorphous phase

Takeshi Nagase, Tomoyuki Terai, Tomoyuki Kakeshita, Megumi Matsumoto, Yoshikazu Fujii

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The microstructure and magnetic properties of rapidly solidified in Cu43.2Ag32.0La4.8Fe20 (at.%) alloy, which was designed as the combination of Cu-Ag-based Cu54Ag40La6 alloy with high glass forming ability and Fe, was investigated. The composite of an amorphous phase and crystalline phases was obtained in melt-spun ribbons. The spherical Fe globules, which was surrounded by Cu-rich crystalline phases, were embedded in Cu-Ag-La based amorphous matrix. The particular structure in melt-spun ribbons can be explained by the liquid phase separation and the crystallization of the separated Fe-rich liquid globules during the cooling of the thermal melt. The melt-spun ribbon shows the typical ferromagnetic magnetic properties due to the ten nano-meter ordered bcc-Fe based globules.

Original languageJapanese
Pages (from-to)45-51
Number of pages7
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number1
Publication statusPublished - 2018

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