Journal
JOURNAL OF APPLIED PHYSICS
Volume 114, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4841035
Keywords
-
Categories
Funding
- National Key Basic Research Program of China [2012CB825700]
- National Natural Science Foundation of China [10979002, 51371157, 11179026]
- Natural Science Foundation of Zhejiang Province [Z1110196, Y4110192]
- Zhejiang University-Helmholtz cooperation fund
- Fundamental Research Funds for the Central Universities
- Chinese Academy of Sciences [KJCX2-SWN20, KJCX2-SW-N03]
Ask authors/readers for more resources
A pressure-induced amorphous-to-amorphous reversible transformation was revealed in Pr75Al25 metallic glass (MG) using in situ high-pressure synchrotron x-ray diffraction technique. The transition began at about 21 GPa with a similar to 5% volume collapse and ended at about 35 GPa. This transition is reversible with hysteresis. Based on the high-pressure behaviors of Ce-based metallic glasses and Pr metal here, we suggest that the pressure-induced polyamorphic transition in Pr75Al25 MG stems from 4f-electron delocalization of Pr metal which leads to abrupt change in bond shortening. These results obtained here provide new insights into the underlying mechanism of the amorphous-to-amorphous phase transition in metallic glasses and will trigger more theoretical and experimental investigations for such transition. (C) 2013 AIP Publishing LLC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available