| Title |
Demonstrative Experiments on the Magnetocaloric Effect of Gadolinium |
| Keywords |
Magnetocaloric effect ; 자기열량효과 ; Gadolinium ; 가돌리늄 ; Direct measurement ; 직접측정 ; Magnetization ; 자화 ; Specific heat ; 비열 |
| Abstract |
Magnetic refrigeration is based on the magnetocaloric effect(MCE)－the ability of some materials to heat up when magnetized and cool down when removed from the magnetic field. The available techniques for studying the MCE are: (1) direct measurements by monitoring the change in the material's temperature during the application or removal of the magnetic field; and (2) indirect calculations from the experimental data of magnetization and/ or specific heat as a function of the temperature and magnetic field. The MCE of gadolinium (Gd) has been demonstrated by direct measurements of temperature change, and isothermal magnetic entropy changes and adiabatic temperature changes have been calculated. |