Compression Behaviour of Ni₇₇P₂₃ Amorphous Alloy up to 30.5GPa

The compression behaviour of Ni₇₇P₂₃ amorphous alloy is investigated at room temperature in a diamond-anvil cell instrument using in-situ high pressure energy dispersive x-ray diffraction with a synchrotron radiation source. The equation of state is determined by fitting the experimental data according to the Birch--Murnaghan equation. It is found that the structure of Ni₇₇P₂₃ amorphous alloy is stable under pressures up to 30.5GPa. Within the pressure range from zero to the experimental one, the pressure-induced structural relaxation is reversible.