Induced High-Pressure Phases in the Bi-In, Bi-Sn, and Bi-Tl Alloy Systems

High-pressure experiments on Bi-In, Bi-Sn, and Bi-Tl alloys are reported. X-ray diffraction and specific-volume discontinuities indicate that a new phase is formed in the Bi-In system under pressure at the composition of approximately 57 at.% bismuth. X-ray diffraction results show the new phase to be isostructural to the high-pressure phase BiSn formed at a pressure of 18 kbar at 23°C. The composition range of the $\omega$ phase formed in Bi-Tl alloys is extended toward the bismuth side under pressure.