Abstract

The magnetic phase transitions near the triple point of FeRh 1− x Pt x system with body-centered tetragonal structure were studied by means of magnetization measurement and Mössbauer spectroscopy. The composition ( x) vs. temperature ( T) phase diagram is determined. The triple point exists at x=0.715 and T=388 K. It is noted that the spin fluctuation plays an important role in the magnetic phase transition around the triple point.

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