Heat capacity of potential regenerator ABO3 materials at low temperature Original Research Article

Several samples of rare-earth oxide of perovskite structure were developed and investigated between 5 and 50 K. For this purpose several samples of rare-earth magnetic materials were developed by systematically changing A- and B-sites in the general formula of a perovskite ABO3. In this formula A is a rare-earth ion and B is a metal ion. The heat capacities of the samples were measured with the thermal relaxation method. We discussed the possibility of using these materials as regenerator material. TbCoO3 and GdMnO3 have demonstrated interesting results. Both materials have large specific heat between 5 and 10 K compared to other conventional regenerator materials.