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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
The figure shows the CKA plot for a neat EP sample. The data points obtained at different heating rates (5, 10, 15, 20 °C/min) are fitted to the A2 model using Equation (11). The regression is utilized to estimate the Ea value for a sample.