High-resolution thermal expansion and magnetostriction measurements were performed on single crystalline Sr4Ru3O10 in the temperature range T=2-200 K and magnetic fields up to 12 T. Signatures of the ferromagnetic phase transition at Tc∼102 K were found in the lattice expansion of both the c axis and the ab 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 T∗∼50 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 dTc/dp∼-8.5 K/GPa has been revealed.
Dilatometric study of the metamagnetic and ferromagnetic phases in the triple-layered Sr4Ru3 O10 system
Fittipaldi, R.;Granata, V.;Vecchione, A.;
2016-01-01
Abstract
High-resolution thermal expansion and magnetostriction measurements were performed on single crystalline Sr4Ru3O10 in the temperature range T=2-200 K and magnetic fields up to 12 T. Signatures of the ferromagnetic phase transition at Tc∼102 K were found in the lattice expansion of both the c axis and the ab 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 T∗∼50 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 dTc/dp∼-8.5 K/GPa has been revealed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
