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Title: Surface Modes of Coherent Spinodal Decomposition

Abstract

Here, we use linear stability theory and numerical simulations to show that spontaneous phase separation in elastically coherent solids is fundamentally altered by the presence of free surfaces. Because of misfit stress relaxation near surfaces, phase separation is mediated by unique surface modes of spinodal decomposition that have faster kinetics than bulk modes and are unstable even when spinodal decomposition is suppressed in the bulk. Consequently, in the presence of free surfaces, the limit of metastability of supersaturated solid solutions of crystalline materials is shifted from the coherent to chemical spinodal.

Authors:
 [1];  [2]
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Northeastern Univ., Boston, MA (United States)
Publication Date:
Research Org.:
Northeastern Univ., Boston, MA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1906101
Alternate Identifier(s):
OSTI ID: 1103640
Grant/Contract Number:  
FG02-07ER46400; AC52-07NA27344; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 26; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Tang, Ming, and Karma, Alain. Surface Modes of Coherent Spinodal Decomposition. United States: N. p., 2012. Web. doi:10.1103/physrevlett.108.265701.
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Tang, Ming, & Karma, Alain. Surface Modes of Coherent Spinodal Decomposition. United States. https://doi.org/10.1103/physrevlett.108.265701
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Tang, Ming, and Karma, Alain. Tue . "Surface Modes of Coherent Spinodal Decomposition". United States. https://doi.org/10.1103/physrevlett.108.265701. https://www.osti.gov/servlets/purl/1906101.
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@article{osti_1906101,
title = {Surface Modes of Coherent Spinodal Decomposition},
author = {Tang, Ming and Karma, Alain},
abstractNote = {Here, we use linear stability theory and numerical simulations to show that spontaneous phase separation in elastically coherent solids is fundamentally altered by the presence of free surfaces. Because of misfit stress relaxation near surfaces, phase separation is mediated by unique surface modes of spinodal decomposition that have faster kinetics than bulk modes and are unstable even when spinodal decomposition is suppressed in the bulk. Consequently, in the presence of free surfaces, the limit of metastability of supersaturated solid solutions of crystalline materials is shifted from the coherent to chemical spinodal.},
doi = {10.1103/physrevlett.108.265701},
journal = {Physical Review Letters},
number = 26,
volume = 108,
place = {United States},
year = {Tue Jun 26 00:00:00 EDT 2012},
month = {Tue Jun 26 00:00:00 EDT 2012}
}
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https://doi.org/10.1103/physrevlett.108.265701
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