Crystal Growth and Solute Trapping

DSpace/Manakin Repository

Crystal Growth and Solute Trapping

Citable link to this page

. . . . . .

Title: Crystal Growth and Solute Trapping
Author: Aziz, Michael J.
Citation: Aziz, Michael J. Crystal Growth and Solute Trapping. 1984. Materials Research Society Symposium Proceedings 23: 369-374.
Full Text & Related Files:
Abstract: A simple model for solute trapping during rapid solidification is presented in terms of a single unknown parameters, the interfacial diffusivity Di. A transition from equilibrium segregation to complete solute trapping occurs over roughly an order of magnitude in growth speed, as the interface speed surpasses the maximum speed with which solute atoms can diffuse across the interface to remain ahead of the growing crystal. This diffusive speed is given by Di/Lambda, where Lambda is the interatomic spacing, and is typically of the order 10 meters per second. Comparison is made with experiment. The steady-state speed of a planar interface is predicted by calculating the free energy dissipated by irreversible processes at the interface and equating it to the available driving free energy. Steady-state solutions are presented for Bi-doped Si during pulsed laser annealing.
Published Version: http://www.mrs.org/s_mrs/sec.asp?CID=1727&DID=38980&SID=1
Other Sources: http://www.seas.harvard.edu/matsci/people/aziz/publications/mja004.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:3306021

Show full Dublin Core record

This item appears in the following Collection(s)

  • FAS Scholarly Articles [7078]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

Search DASH


Advanced Search
 
 

Submitters