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Updated: Jun 11, 2025

Ultrasound Velocity Measurement in a Liquid Metal Electrode
Published on: August 5, 2015
Excess volume measurements of binary alloy liquids using electrostatic levitation: Magneto-volume effect on positive
Lei Wang1, Yong Chan Cho1, Yun-Hee Lee1
1Frontier of Extreme Physics, Space Metrology Group, Korea Research Institute of Standards and Science, 209 Gajeong-Ro, Yuseong-Gu, Daejeon 34113, Republic of Korea.
Abstract:
In this study, we investigate the excess volume (VE) of 24 binary miscible and compound alloy melts using electrostatic levitation. Notably, Pd50X50 (X = Fe, Co, and Ni) and Pt50Fe50 solid solutions with slightly negative or zero mixing enthalpy (ΔHmix) display pronounced positive VE and significantly improved liquid stability after alloying, whereas compound alloy liquids with negative ΔHmix exhibit negative VE. Moreover, the VE of Pd50X50 and Pt50X50 consistently decreases with the increasing number of electrons in X, indicating a magneto-volume effect observed in specific heat measurements. These findings suggest that the formation of excess volume is influenced by both magnetic and thermodynamic contributions.
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