Study On Magnetocaloric And Thermoelectric Application Potential Of Ferromagnetic Compound Cecrge3

We report on the magnetocaloric and thermoelectric properties of CeCrGe3. The compound crystallizes in the BaNiO3-type crystal structure (space group P6(3)/mmc, no. 194, hP10) and undergoes paramagnetic to ferromagnetic phase transition at 70K, close to the temperature of nitrogen condensation. The transition is found to be second order in nature as evidenced from the Arrott plot analysis. The reversible magnetocaloric effect was observed at low temperature with the magnetic entropy change reaching Delta S-m = -2.2J/(kgK) around 70K in a magnetic field change of 5T, with the relative cooling power of RCP = 57J/kg and the adiabatic temperature change of Delta T-ad = 0.8K. The electrical resistivity of CeCrGe3 shows a metalliclike behavior up to 900K. The Seebeck coefficient remains positive from 2K up to 900K and reveals a broad maximum with S-max = 18 mu V/K at 300K. The thermal conductivity near room temperature is of the order of 5.3W/(mK), resulting in a small value of thermoelectric figure of merit ZT = 0.005. Published under license by AIP Publishing.