Intermetallic ternary full Heuslers have potential spintronic applications, due to a possible link between the mechanisms for magnetism and half-metallicity in these systems. However, the extent of the interaction between the two is still debated. Pd2MnIn is a rare weak antiferromagnet in this family of compounds. Experiments into electrical and thermal transports under pressure have revealed dramatic changes in the electronic properties of Pd2MnIn at 40kbar. A transformation into a ferromagnetic state has been proposed. 5 days in total are requested at the Pearl beamline to carry out high-pressure and low-temperature powder neutron diffraction. The desired pressure and temperature ranges for the experiments are 0 – 100kbar and 100 – 290K, which will provide insights into the connection between the possible changes in magnetism and the electronic anomalies in this material.