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Title: General 2.5 power law of metallic glasses

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America

Metallic glass (MG) is an important new category of materials, but very few rigorous laws are currently known for defining its “disordered” structure. Recently we found that under compression, the volume ( V ) of an MG changes precisely to the 2.5 power of its principal diffraction peak position (1/ q 1 ). In the present study, we find that this 2.5 power law holds even through the first-order polyamorphic transition of a Ce 68 Al 10 Cu 20 Co 2 MG. This transition is, in effect, the equivalent of a continuous “composition” change of 4 f -localized “big Ce” to 4 f -itinerant “small Ce,” indicating the 2.5 power law is general for tuning with composition. The exactness and universality imply that the 2.5 power law may be a general rule defining the structure of MGs.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC02-06CH11357; EAR 11-57758; EAR-1128799; FG02-94ER14466; FG02-99ER45775; U1530402; NSF-EAR-1055454; NA0001974
OSTI ID:
1236653
Alternate ID(s):
OSTI ID: 1238286
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 113 Journal Issue: 7; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

References (45)

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