Thermodynamic origin of the pressure-induced Invar effect: General criterion and experimental study of Fe68Pd32RemoveE. R. Priesen Reis, P. Guzman, S. H. Lohaus, A. Lin, C. M. Bernal-Choban, B. Fultz, J. Y. Zhao, G. Shen, M. Y. Hu, E. E. Alp, and B. LavinaPhys. Rev. B 112, 144416 (2025)