Medeiros-Ribeiro, Gilberto and Williams, R. Stanley (2007) Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): Alloy composition and island formation. NANO LETTERS, 7 (2). pp. 223-226.
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://pubs.acs.org/doi/full/10.1021/nl062677b
We determined the enthalpic and entropic contributions to the thermodynamics of coherently strained nanocrystals grown via deposition of pure Ge on Si(001) surfaces at 600 and 700 degrees C by analyzing their composition profile and local strain. We found that the free energy associated with the entropy of mixing, which drives GexSi1-x alloy formation, was significantly larger than the relaxation enthalpy that produces the islands. Thus, entropy plays a significant role in the evolution of the size and shape of the islands during growth through the strong thermodynamic drive to form an alloy.
|Uncontrolled Keywords:||ELECTRICAL-PROPERTIES; DOPED CERIA; TOMOGRAPHY; TEMPERATURES; PARTICLES; OXIDATION|
|Subjects:||Material Science > Functional and hybrid materials|
|Deposited On:||10 Sep 2009 12:15|
|Last Modified:||10 Sep 2009 12:15|
Repository Staff Only: item control page