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Correspondingly, by an adiabatic demagnetization process, which should only be fast enough with respect to the slow transient time of the magnetic properties of the dot, the temperature of the dot diminishes rsp. increases with decreasing magnetic field, and in some cases we obtain quite pronounced effects.PACS: 75.20.g -Diamagnetism and paramagnetism; 75.30.Sg -Magnetic cooling; 75.90.+w -New topics in magnetic properties and materials; 73.29.Dx -Electron states in low-dimensional structures