Issue |
EPJ Web of Conferences
Volume 15, 2011
LAM14 - XIV Liquid and Amorphous Metals Conference
|
|
---|---|---|
Article Number | 01001 | |
Number of page(s) | 3 | |
Section | Liquid metals and alloys | |
DOI | https://doi.org/10.1051/epjconf/20111501001 | |
Published online | 18 May 2011 |
https://doi.org/10.1051/epjconf/20111501001
Novel liquid-liquid transition in the liquid Se-GeSe system
Department of Physics, Faculty of Science, Niigata
University, Ikarashi
2-8050, Nishi-ku, Niigata
950-2181,
Japan
The sound velocity in the liquid Se-SeGe system under the saturated vapor pressure was measured at every 1 degree. A minimum in the sound velocity as a function of temperature has been observed for alloys with 12.5 to 45 at.% Ge, which suggests that the crossover liquid-liquid transition occurs in the liquid around GeSe2. In addition to the minimum, it has been found for alloys with 15 to 27.5 at.% Ge that the sound velocity decreases rather stepwise. The reproducibility has been checked for different samples with the same composition and for different ultrasonic transducers. The decrease occurs in a very narrow temperature interval, a few degrees, and shows hysteresis depending on thermal treatments. The position of this temperature region lowers with increasing Ge concentration, and appears to merge into a minimum in the sound velocity around GeSe2. Novel structural changes, being the first order in nature, occur slightly below the crossover transition.
© Owned by the authors, published by EDP Sciences, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.