Journal ArticleDOI
Finite-thickness effect on crystallization kinetics in thin films and its adaptation in the Johnson-Mehl-Avrami-Kolmogorov model
TLDR
In this article, an analytical solution for the crystallization kinetics in the special case of plate-shaped samples with a finite thickness is presented. But the analytical solution does not reveal the thickness range which influences the isothermal crystallization mode significantly.Abstract:
The Johnson–Mehl–Avrami–Kolmogorov (JMAK) model is widely used to quantify the isothermal crystallization kinetics. The present work reports an analytical solution for the crystallization kinetics in the special case of plate-shaped samples with a finite thickness. As a result, we obtained an adapted JMAK model revealing the thickness range which influences the crystallization kinetics mode significantly. The analytical solution also provides theoretical bounds for the film thickness, where the assumption of 2D or 3D kinetics is accurate. Finally, the conclusions related to amorphous silicon and amorphous nickel-titanium thin films are reported.read more
Citations
More filters
Journal ArticleDOI
Spontaneous exchange bias formation driven by a structural phase transition in the antiferromagnetic material
TL;DR: The magnetic characterization indicates that structural defects in the antiferromagnetic layer are behind the resulting large value of the exchange bias field and its good thermal stability.
Journal ArticleDOI
Thin film phase transformation kinetics: From theory to experiment
M.M. Moghadam,Peter W. Voorhees +1 more
TL;DR: In this paper, the effect of finite size on the kinetics of thin film phase transformations was analyzed using the level set method. But the analysis revealed that the JMAK framework can yield a spurious thickness dependent activation energy for the transformation.
Journal ArticleDOI
Modeling interface-controlled phase transformation kinetics in thin films
TL;DR: In this article, the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation is used to describe phase transformation kinetics in thin films.
Journal ArticleDOI
Ultrastable glasses: new perspectives for an old problem
TL;DR: In this article , the authors summarize the state of the art of vapor-deposited (and other) ultrastable glasses with a focus on the mechanism of equilibration, the transformation to the liquid state and the low temperature properties.
Journal ArticleDOI
Improvement of the Cycling Performance of Aluminum Anodes through Operando Light Microscopy and Kinetic Analysis.
TL;DR: A systematic study investigating the kinetics of electrochemical lithiation of Al thin films to understand the mechanisms governing the phase transformation, using an operando light microscopy platform offers a renewed promise for the commercialization of Al-based anodes in LIBs where the performance requirements are compatible with the cycle life-extending strategies proposed here.
References
More filters
Journal ArticleDOI
Kinetics of Phase Change. I General Theory
TL;DR: In this paper, the theory of phase change is developed with the experimentally supported assumptions that the new phase is nucleated by germ nuclei which already exist in the old phase, and whose number can be altered by previous treatment.
Journal ArticleDOI
Kinetics of Phase Change. II Transformation‐Time Relations for Random Distribution of Nuclei
TL;DR: In this article, a relation between the actual transformed volume V and a related extended volume V1 ex is derived upon statistical considerations, and a rough approximation to this relation is shown to lead, under the proper conditions, to the empirical formula of Austin and Rickett.
Journal ArticleDOI
Granulation, Phase Change, and Microstructure Kinetics of Phase Change. III
TL;DR: In this paper, a comprehensive description of the phenomena of phase change may be summarized in Phase Change, Grain Number and Microstructure Formulas or Diagrams, giving, respectively, the transformed volume, grain, and microstructure densities as a function of time, temperature, and other variables.
Journal ArticleDOI
Crystallization kinetics and the JMAK equation
TL;DR: In this paper, the application of the Johnson-Mehl-Avrami-Kolmogorov (JMAK) theory for the calculation of the volume fraction crystallized is discussed for several particular cases of isothermal transformations.
Journal ArticleDOI
On some limitations of the Johnson–Mehl–Avrami–Kolmogorov equation
TL;DR: In this article, the limitations of the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation for describing kinetics of phase transformation are demonstrated using probabilistic analysis and Monte Carlo simulations.