Magnetic and X-Ray Studies of Iron-Germanium System I Partial Diagram of Phase with B8_2 and Its Variant Type of Structure

概要

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The earlier diagram of β phase region is revised on the basis of x-ray and magnetic studies, and the existence of three phases β,η,κ is confirmed. The new β phase is homogeneous in a range from 32.8 to 40.0 at % Ge at 1050℃, η phase from 40.8 to 43.5 at % Ge at 800度 and κ phase has a narrow range of homogeneity at 43.5 at % Ge below about 500℃. Two phase region between β and η is very narrow. β Phase has a B8_2 (Ni_2 ln) type of structure and is ferromagnetic. Alloy in the iron rich region of β phase is stable at high temperature and the quenched one precipitates a metastable phase with b,c.c. structure. η Phase is ferromagnetic and has a variant structure of B8_2 type. The structure of κ phase is still unknown and the magnetism is probably paramagnetic.
社団法人日本物理学会の論文
1965-01-05