Damghan University Press Iranian Journal of Astronomy and Astrophysics 2322-4924 12 4 2026 02 16 Criticality in Nonconformal Plasmas at Finite Temperature and Density 299 310 2066 10.22128/ijaa.2026.3168.1234 EN Leila Shahkarami School of Physics, Damghan University, Damghan 36716-45667, Iran. Journal Article 2025 11 28 We study the thermodynamics of an asymptotically AdS black hole in a holographic Einstein-Maxwell-dilaton model describing a nonconformal plasma at finite temperature and chemical potential. Using a logarithmic warp factor and working in the grand canonical ensemble, we analyze the temperature-horizon relation, entropy density, grand potential, pressure, energy density, and trace anomaly, demonstrating the emergence of a first-order phase transition at low chemical potentials, a critical end point, and a smooth crossover at higher chemical potentials. Thermodynamic response functions, including the heat capacity and charge susceptibility, exhibit finite jumps at the first-order transition, divergence at the critical end point, and broad maxima in the crossover region. These results collectively establish a consistent and QCD-like phase structure in this holographic framework. https://ijaa.du.ac.ir/article_2066_303441c47ed9af1738894c23079e19a6.pdf