Composition dependence of magnetocaloric effect in Sm1-xSrxMnO3 (x = 0.3-0.5)

Abstract

We investigated magnetic and magnetocaloric properties in Sm1-xSrxMnO3 (x = 0.30-0.5). We report a magnetic field driven first-order metamagnetic transition in the paramagnetic state in x = 0.4 and 0.5 and a second-order transition in x = 0.3. The highest magnetic entropy (-Sm = 6.2 J/kgK for H = 5 T at T = 125 K) that occurs in x = 0.4 is associated with the metamagnetic transition resulting from the field-induced growth and coalescence of ferromagnetic nano clusters preexisting in the paramagnetic state. Our results suggest that manganites with intrinsic nanoscale phase separation can be exploited for magnetic refrigeration.

arXiv comment14 pages, 5 figures

References in corpus (1)

• Quenched disorder induced magnetization jumps in (Sm,Sr)MnO${}_3$

Cited by in corpus (8)

• Giant magnetocaloric effect in magnetically frustrated EuHo${}_2$O${}_4$ and EuDy${}_2$O${}_4$ compounds
• Multicaloric effect in multiferroic Y2CoMnO6
• Magnetocaloric effect in manganites: metamagnetic transitions for magnetic refrigeration
• Tunable spin reorientation transition and magnetocaloric effect in Sm0.7-xLaxSr0.3MnO3 series
• Impact of strain on metamagnetic transitions in $S{m}_{0.5}S{r}_{0.5}Mn{O}_3$ thin films
• Impact of substrate on magnetic phase coexistence in bicritical $S{m}_{0.53}S{r}_{0.47}Mn{O}_3$ thin films
• Investigation of the magnetic phase transition and magnetocaloric properties of the Mn${}_2$FeSbO${}_6$ ilmenite
• Comparative study of magnetic and magnetotransport properties of Sm0.55Sr0.45MnO3 thin films grown on different substrates