In Situ X-Ray Measurement of Order-Disorder Transition Temperature of Fe-Rich Fe-Pt Alloys : Structure and Mechanical and Thermal Properties of Condensed Matter

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概要

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• The composition dependence of order-disorder transition temperature T_c of Fe_<1-c>Pt_c alloys (c=0.22, 0.25, 0.28, 0.33, 0.345 and 0.36) was investigated by measuring the X-ray integrated intensity of powder diffraction at high temperature. The temperatures T_c between the L1_2-type ordered structure and disordered fcc structure were significantly different from those reported thus far. The maximum T_c of the L1_2 structure was not at the composition of 25 at% Pt, but at about 33 at% Pt. It was found that the L1_2 and the L1_0 ordered phases coexisted at around 34.5 at% Pt. A new phase diagram was proposed based on the measurements.

• 社団法人応用物理学会の論文
• 2002-02-01

著者

• Takama Toshihiko

  Division Of Applied Physics Graduate School Of Engineering Hokkaido University

• Osaka Keiichi

  Division Of Applied Physics Graduate School Of Engineering Hokkaido University

• SAKAKI Daisuke

  Division of Applied Physics, Graduate School of Engineering, Hokkaido Universitye

• Sakaki Daisuke

  Division Of Applied Physics Graduate School Of Engineering Hokkaido Universitye

関連論文

• In Situ X-Ray Measurement of Order-Disorder Transition Temperature of Fe-Rich Fe-Pt Alloys : Structure and Mechanical and Thermal Properties of Condensed Matter
• Influence of Voids on the Accuracy of Measurement of Vacancy Concentration in NiAl and CoAl Intermetallic Compounds

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