Magnetic Properties of Metastable bcc and fcc Fe-Cu Alloys Produced by Vapor Quenching

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High concentration Fen ,Cu, allovs have been obtained bv rf sr>utterin:technique and investigated by X-ray diffraction and magnetization measurements.The bcc phase is extended over the region with x=0 -0.4, while the fcc phasewith ,X'=0.6 - 1.0. For .X':0.4 -0.6, we have the mixed phase of bcc and fcc. Thelattice constant of bcc phase increases slightly and that of fcc phase decreaseswith increasing x. In the bcc alloys, the average magnetic moment decreaseswith increasing x and deviates upwards from the simple dilution law. In the fccalloys, the magnetic moment also decreases with increasing x but it deviatesdownwards from the simple dilution law. The Curie temperature, T., of theFe. .Cu, alloys decreases abruptly with increasing xo T. is higher than 750 Kfor the bcc alloys, while it is lower than 320 K for the fcc alloys and become 0 Kat about x=O.92.
社団法人日本物理学会の論文
1984-09-15