Study of modification of the magnetic and magnetocaloric properties with Gd doping in Sm-Sr based manganite compounds: Influence of short range charge-orbital ordering

Detail investigation on the influence of Gd-doping both in the magnetic and magnetocaloric properties of (Sm 1 yGdy)0.55Sr0.45MnO3 (y = 0.5 and 0.7) compounds has been carried out. With the Gd-content, the studied compounds exhibit quite distinct physical properties in the presence of an external magnetic field. In addition to the field-induced meta-magnetic transition and quantitatively large magnetocaloric effect, both the compounds reveal significant relative cooling power and refrigerant capacity. However, in the low temperature region, different nature in magnetocaloric effect was addressed by considering the field induced modification of shortrange ordering.

Automated summary

The investigation shows that Gd-doping has a significant influence on both the magnetic properties and magnetocaloric effects of (Sm1-yGdy)0.55Sr0.45MnO3 compounds. The compounds exhibit distinct physical properties under an external magnetic field, with field-induced meta-magnetic transition and large magnetocaloric effects. Different nature in the magnetocaloric effect at low temperatures is attributed to the field-induced modification of short-range ordering.