  We report the effect of hydrostatic pressure on the magnetic and structural
properties of the shape-memory Heusler alloy Ni50Mn35In15. Magnetization and
x-ray diffraction experiments were performed at hydrostatic pressures up to 5
GPa using diamond anvil cells. Pressure stabilizes the martensitic phase,
shifting the martensitic transition to higher temperatures and suppresses the
ferromagnetic austenitic phase. Above ~3 GPa, where the martensitic-transition
temperature approaches the Curie temperature in the austenite, the
magnetization shows no indication of ferromagnetic ordering anymore. We further
find an extremely large temperatureregion with a mixture of martensite and
austenite phases, which directly relates to the magnetic properties.
