Diffusion coefficient of the order parameter in the early stages of the time evolution of InGaN phase separation

2001 ◽  
Vol 90 (11) ◽  
pp. 5515-5521 ◽  
Author(s):  
Toshiyuki Okumura ◽  
Yoshiro Akagi
Keyword(s):  
Diffusion Coefficient ◽  
Phase Separation ◽  
Time Evolution ◽  
Order Parameter ◽  
Early Stages

scholarly journals On the Role of Poly-Glutamic Acid in the Early Stages of Iron(III) (Oxy)(hydr)oxide Formation

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 715
Author(s):  
Miodrag J. Lukić ◽  
Felix Lücke ◽  
Teodora Ilić ◽  
Katharina Petrović ◽  
Denis Gebauer
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Phase Separation ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Nucleation Theory ◽  
Classical Nucleation Theory ◽  
Oxide Formation ◽  
Early Stages ◽  
Titration Assay

Nucleation of minerals in the presence of additives is critical for achieving control over the formation of solids in biomineralization processes or during syntheses of advanced hybrid materials. Herein, we investigated the early stages of Fe(III) (oxy)(hydr)oxide formation with/without polyglutamic acid (pGlu) at low driving force for phase separation (pH 2.0 to 3.0). We employed an advanced pH-constant titration assay, X-ray diffraction, thermal analysis with mass spectrometry, Fourier Transform infrared spectroscopy, and scanning electron microscopy. Three stages were observed: initial binding, stabilization of Fe(III) pre-nucleation clusters (PNCs), and phase separation, yielding Fe(III) (oxy)(hydr)oxide. The data suggest that organic–inorganic interactions occurred via binding of olation Fe(III) PNC species. Fourier Transform Infrared Spectroscopy (FTIR) analyses revealed a plausible interaction motif and a conformational adaptation of the polypeptide. The stabilization of the aqueous Fe(III) system against nucleation by pGlu contrasts with the previously reported influence of poly-aspartic acid (pAsp). While this is difficult to explain based on classical nucleation theory, alternative notions such as the so-called PNC pathway provide a possible rationale. Developing a nucleation theory that successfully explains and predicts distinct influences for chemically similar additives like pAsp and pGlu is the Holy Grail toward advancing the knowledge of nucleation, early growth, and structure formation.

scholarly journals Oxidation of polycrystalline Ni studied by spectromicroscopy: Phase separation in the early stages of crystallite growth

2010 ◽  
Vol 81 (8) ◽  
Author(s):  
A. Cornish ◽  
T. Eralp ◽  
A. Shavorskiy ◽  
R. A. Bennett ◽  
G. Held ◽  
...  
Keyword(s):  
Phase Separation ◽  
Crystallite Growth ◽  
Early Stages

Early stages ofα−α′phase separation in Fe-Cr alloys: An atomistic study

2009 ◽  
Vol 79 (10) ◽  
Author(s):  
G. Bonny ◽  
D. Terentyev ◽  
L. Malerba ◽  
D. Van Neck
Keyword(s):  
Phase Separation ◽  
Early Stages ◽  
Α Phase ◽  
Atomistic Study

Phase separation during the early stages of ordering in Mi3Mo

1988 ◽  
Vol 36 (2) ◽  
pp. 413-424 ◽  
Author(s):  
U.D. Kulkarni ◽  
S. Banerjee
Keyword(s):  
Phase Separation ◽  
Early Stages

Time evolution of phase structure and corresponding mechanical properties of iPP/PEOc blends in the late-stage phase separation and crystallization

Polymer ◽  
2007 ◽  
Vol 48 (21) ◽  
pp. 6395-6403 ◽  
Author(s):  
Yongyan Pang ◽  
Xia Dong ◽  
Ying Zhao ◽  
Charles C. Han ◽  
Dujin Wang
Keyword(s):  
Mechanical Properties ◽  
Phase Separation ◽  
Time Evolution ◽  
Late Stage ◽  
Phase Structure

Theory of coupled phase transitions: Phase separation and abnormal variation of order parameter

2000 ◽  
Vol 113 (10) ◽  
pp. 4465-4468 ◽  
Author(s):  
Fan Zhong ◽  
M. Jiang ◽  
D. Y. Xing ◽  
Jinming Dong
Keyword(s):  
Phase Transitions ◽  
Phase Separation ◽  
Order Parameter ◽  
Abnormal Variation
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