Anomalous elastic properties across the γ to α volume collapse in cerium

The origin of the volume collapse of cerium, the only elemental metal with a critical point in the solid phase, remains elusive. Here the authors show that, near the critical point, the f-electrons make cerium lose its compressive strength while maintaining a finite shear strength—which makes cerium...

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Bibliographic Details
Main Authors: Magnus J. Lipp, Zs. Jenei, H. Cynn, Y. Kono, C. Park, C. Kenney-Benson, W. J. Evans
Format: Article
Language:English
Published: Nature Publishing Group 2017-10-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-017-01411-9
Description
Summary:The origin of the volume collapse of cerium, the only elemental metal with a critical point in the solid phase, remains elusive. Here the authors show that, near the critical point, the f-electrons make cerium lose its compressive strength while maintaining a finite shear strength—which makes cerium unexpectedly auxetic.
ISSN:2041-1723