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.
@article{arxiv.cond-mat/0510383,
title = {Ferromagnetism Induced by Uniaxial Pressure in the Itinerant Metamagnet Sr3Ru2O7},
author = {Hiroshi Yaguchi and Robin S. Perry and Yoshiteru Maeno},
journal= {arXiv preprint arXiv:cond-mat/0510383},
year = {2009}
}
Comments
Accepted for publication in Proc of 24th Int. Conf. on Low Temperature Physics (LT24); 2 pages