1results about How to "Large magnetocaloric effect" patented technology

The application relates to a EuTiO3-based composite material and a preparation method and application thereof, and belongs to the technical field of magnetic refrigeration materials. The EuTiO3-based composite material provided by the application comprises a EuTiO3 base and a metal filler; wherein the EuTiO3 base is EuTiO3 and / or EuTiO3 doped with metal M, the metal M is at least one of Al, Nb, Ta and Zr; the metal filler is Cu, and the mass content of the Cu is 2-20%; and the preparation method is that a copper layer is uniformly covered on the surface of EuTiO3-based micro powder by adopting a chemical plating technology, and then tabletting and sintering are carried out to obtain the EuTiO3-based composite material. The EuTiO3-based composite material has both large magnetic heat effect and high thermal conductivity in a liquid helium temperature range, can obtain high heat exchange efficiency and refrigeration capacity in a magnetic refrigeration system, and has high practical value.