Magnetic refrigeration technique has attracted wide interest because of its high effi-ciency and causing no environment contamination. There is still much essentialwork to do about the magnetic refrigeration technique at near room temperature, e.g.to develop new magnetic refrigerators with high thermo-magnetic effect.In the Magnetic refrigeration technique has attracted wide interest because of its high effi-ciency and causing no environment contamination. There is still much essentialwork to do about the magnetic refrigeration technique at near room temperature, egto develop new magnetic refrigerators with high thermo-magnetic effect. In the