Magnetic field dependence of Schottky anomaly in the specific heats of stripe-ordered superconductors La1.6−xNd0.4SrxCuO4

► The largest entropy change is observed in the most stable charge ordered sample. ► A large Schottky anomaly specific heat appears at low temperatures due to Nd3+. ► The lattice specific heat is enhanced by the replacement of La with Sr.