, Volume 17, Issue 1, pp 33-38

Behaviour of ultrasonic velocities in amorphous Se90 Ge10 and Se85 Ge15 alloys near their glass transition

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Precise measurements of 10 MHz frequency longitudinal and shear wave velocities are reported in amorphous SeGe alloys near their glass transition temperature T g . There is a sharp decrease of the velocities near T g , but the reduction in velocities appears smaller than expected.