ANOMALOUS EFFECT OF PRESSURE ON THE CURIE TEMPERATURE IN MECHANICALLY ALLOYED Fe-Ni INVAR
来源期刊：Acta Metallurgica Sinica2007年第3期
论文作者：F. Ono X.H. Wei
Key words：invar alloy; Fe-Ni,mechanical alloying; Curie temperature;
Abstract: Measurements of magnetic susceptibility in mechanically alloyed Fe-Ni Invar alloys were taken under pressures up to 7.5GPa. The rate of decrease in the Curie temperature for 700℃ annealed specimen was larger than that annealed at 1000℃. This result can be explained by considering the fact that the width of the concentration fluctuation becomes larger in the specimen annealed at lower temperature.
F. Ono1，X.H. Wei2
(1.Department of Physics, Okayama University, 3-1-1 Tsushima-Naka,Okayama 700-8530, Japan;
2.Department of Electronic Science, Huizhou University, Huizhou 516007, China)
Abstract:Measurements of magnetic susceptibility in mechanically alloyed Fe-Ni Invar alloys were taken under pressures up to 7.5GPa. The rate of decrease in the Curie temperature for 700℃ annealed specimen was larger than that annealed at 1000℃. This result can be explained by considering the fact that the width of the concentration fluctuation becomes larger in the specimen annealed at lower temperature.
Key words:invar alloy; Fe-Ni,mechanical alloying; Curie temperature;
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