Substitution Effect of Oxide Magnetic Materials for Regenerator

Abstract

Several samples of TbAlO3 and related magnetic materials were developed. These materials have large magnetic moment, and most of them exhibit the magnetic phase transition below 4K. The heat capacity of all samples has been measured with the adiabatic heat-pulse method. The dependence of the heat capacity on the preparation temperature has been studied. We discussed possibility of using these materials as regenerator materials in pulse tube refrigerator.