Ahmed Rizwan, C.L.Naveena Kumara, A.Vaid, D.2026-02-062021Springer Proceedings in Physics, 2021, Vol.261, , p. 937-9419308989https://doi.org/10.1007/978-981-33-4408-2_134https://idr.nitk.ac.in/handle/123456789/30369We investigate thermodynamics of regular Bardeen AdS black hole surrounded by quintessence. Pressure-Volume (P-V) and temperature-entropy (T-S) plots are obtained from the first law of black hole thermodynamics, shows a critical behaviour. This is reflected in the divergence of specific heat against entropy plots. Using the thermodynamic geometry, we have tried to affirm this critical property. From the Ruppeiner and Weinhold geometries, we have calculated the thermodynamic curvature scalar R<inf>R</inf> and R<inf>W</inf> in the quintessence dark energy regime. It is found that in our case these thermodynamic scalars can only identify the critical behaviour and fail to show divergence at the phase transition points observed in specific heat study. © 2021, Springer Nature Singapore Pte Ltd.