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Title: 3D lattice distortions and defect structures in ion-implanted nano-crystals

The ability of Focused Ion Beam (FIB) techniques to cut solid matter at the nano-scale revolutionized the study of material structure across the life-, earth- and material sciences. But a detailed understanding of the damage caused by the ion beam and its effect on material properties remains elusive. We examine this damage in 3D using coherent X-ray diffraction to measure the full lattice strain tensor in FIB-milled gold nano-crystals. We also found that even very low ion doses, previously thought to be negligible, cause substantial lattice distortions. At higher doses, extended self-organized defect structures appear. Combined with detailed numerical calculations, these observations allow fundamental insight into the nature of the damage created and the structural instabilities that lead to a surprisingly inhomogeneous morphology.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [6] ;  [7] ;  [4] ;  [3]
  1. Univ. of Oxford (United Kingdom). Dept. of Engineering Science
  2. Univ. College, London (United Kingdom). London Centre for Nanotechnology; Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab. (RAL)
  3. Univ. of Oxford (United Kingdom). Dept. of Materials
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
  5. La Trobe Univ., Melbourne, VIC (Australia). ARC Centre of Advanced Molecular Imaging; CSIRO Manufacturing Flagship, CAN Parkville (Australia)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  7. La Trobe Univ., Melbourne, VIC (Australia). ARC Centre of Advanced Molecular Imaging
Publication Date:
Report Number(s):
BNL-113662-2017-JA
Journal ID: ISSN 2045-2322; R&D Project: PO011; KC0201060
Grant/Contract Number:
SC00112704; AC02-76SF00515; AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1349558
Alternate Identifier(s):
OSTI ID: 1360215; OSTI ID: 1390607