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Title: X-ray diffraction study of laser-driven solid-state diffusional mixing and new phase formation in Ni-Pt multilayers [X-ray diffraction study of laser-driven solid-state diffusional mixing and new phase formation]

Journal Article · · Physical Review B
 [1];  [1];  [1];  [1];  [2]
  1. Univ. of Delaware, Newark, DE (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)

An in situ optical pump and x-ray probe technique has been utilized to study photoinitiated solid-state diffusion in a Ni-Pt multilayer system. Hard x-ray diffraction has been used to follow the systematic growth of the NiPt alloy as a function of laser intensity and total energy deposited. It is observed that new phase growth can be driven in as little as one laser pulse, and that repeated photoexcitation can completely convert the entire multilayer structure into a single metallic alloy. In conclusion, the data suggest that lattice strain relaxation takes place prior to atomic diffusion and the formation of a NiPt alloy.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF); National Institutes of Health (NIH), National Institute of General Medical Sciences
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1372088
Alternate ID(s):
OSTI ID: 1342442
Journal Information:
Physical Review B, Vol. 95, Issue 6; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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