We report a reversible change in electrical resistivity accompanied with the glass transition (glass transition temperature Tg = 570 K) in a Pd40Cu30Ni10P20 bulk glass. The bulk glass with a diameter of about 5 mm and length of 30 mm was produced at a maximum cooling rate of 1.2 K/s. This bulk glass showed a negative temperature coefficient of resistivity -0.81×10-4 K-1, at room temperature, -4.17×10-4 K-1 in the supercooled liquid region, and -2.75×10-4 K-1 in the liquid state. The undercooled liquid alloy beyond eutectic temperature Tm = 804 K did not show the onset of crystallization until room temperature. The behavior of resistivity around Tg was in accordance with the heating to and cooling from the melt. This suggests that the amorphous structure might vary reversibly according to the glass transition in the present glass.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)