Abstract
High-resolution thermal expansion and magnetostriction measurements were performed on single crystalline in the temperature range K and magnetic fields up to 12 T. Signatures of the ferromagnetic phase transition at K were found in the lattice expansion of both the axis and the plane. Due to the layered crystal structure the effects are, however, strongly anisotropic. Further distinct anomalies are visible in the lower temperature region, which could be correlated with the metamagnetic transition at K. By relating the changes of the thermal expansion at the ferromagnetic transition to those of the heat capacity via the Ehrenfest relation, a strong volumetric pressure dependence of K/GPa has been revealed.
- Received 7 June 2016
- Revised 12 September 2016
DOI:https://doi.org/10.1103/PhysRevB.94.155154
©2016 American Physical Society