Shock Compaction of MnAs1-xSbx Powder using Underwater Shock Wave

MnAs1-xSbx material is one of the ferromagnets which can contribute to a magnetic refrigeration system that is useable at room temperature. In order to obtain further high ferromagnetic properties with grain refinement, consolidation experiments of MnAs1-xSbx powder is carried out by shock compaction using underwater shock wave. A water container which is a part of the shock compaction device is very important because the shock pressure distribution and the pressure magnitude of underwater shock wave depend on the shape of water container. Therefore, the water container is investigated numerically and experimentally in terms of the phenomenon of underwater shock wave. As result, we successfully obtained MnAs1-xSbx bulk material by shock compaction using underwater shock wave, and the MnAs1-xSbx bulk material is investigated in terms of magnetic properties.