Journal Article

PUBDB-2025-02414

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Evidence of quadratic time dependence of the kinetics in a continuous order-disorder transition

Karmakar, S.Extern* ; Mukhopadhyay, M. K. (Corresponding author)Extern* ; Sanyal, M. (Corresponding author)Extern* ; Meinhardt, A.DESY* ; Keller, T. F.DESY*

2025
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.111.024105  doi:10.3204/PUBDB-2025-02414

Abstract: Kinetics of order-disorder transitions including melting in low-dimensional systems is theoretically predicted to be heterogeneous that start by nucleation in defect sites at lower than homogeneous bulk-melting temperature requiring substantially lower energy barrier. We probed kinetics of such transition in thin multilayered films using x-ray scattering and in situ atomic force microscopy (AFM) studies. X-ray results show linear increase with time in in-plane separation of ordered domains while in situ AFM measurements show a linear increase in height of disordered domains with time. The structure factor of the diffraction peak reduces linearly with square of time as the material disorder.

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Contributing Institute(s):

1. Nanolab (FS-NL)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. NEP - Nanoscience Foundries and Fine Analysis - Europe|PILOT (101007417) (101007417)

Experiment(s):

1. DESY NanoLab: Microscopy

Appears in the scientific report 2025

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Database coverage:
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