Ferromagnetism induced by uniaxial pressure in the itinerant metamagnet Sr3Ru2O7

TLDR: In this article, a uniaxial pressure study on the magnetisation of single crystals of the bilayer perovskite Sr3Ru2O7, a metamagnet close to a ferromagnetic instability, was conducted.

Abstract: We report a uniaxial‐pressure study on the magnetisation of single crystals of the bilayer perovskite Sr3Ru2O7, a metamagnet close to a ferromagnetic instability. We observed that the application of a uniaxial pressure parallel to the c‐axis induces ferromagnetic ordering with a Curie temperature of about 80 K and critical pressures of about 4 kbar or higher. This value for the critical pressure is even higher than the value previously reported (∼ 1 kbar), which might be attributed to the difference of the impurity level. Below the critical pressure parallel to the c‐axis, the metamagnetic field appears to hardly change. We have also found that uniaxial pressures perpendicular to the c‐axis, in contrast, do not induce ferromagnetism, but shift the metamagnetic field to higher fields.