Zr41Ti14Cu12.5Ni10Be22.5 alloy can be cooled under high pressure (HP) to a
bulky glassy state at very low cooling rates. The structure and properties
of the bulk metallic glass (BMG) are investigated by differential scanning
calorimetry, x-ray diffraction, ultrasonic study, and density measurements.
The effects of pressure on the glass formation are discussed from the poin
ts of view of nucleation kinetics and thermodynamics. The BMG obtained unde
r HP is in a high-density amorphous state that is different in structure an
d property from low-density amorphous phase quenched in water. Solidificati
on under HP is a promising way not only for synthesizing BMGs with more den
sely packed structures and different properties, but also for understanding
the glass formation mechanism. (C) 2001 American Institute of Physics.