An investigation on the effect of Ti doping at the Mn site on structural magnetic and magnetocaloric properties of Nd0.5Ca0.5MnO3

The current study investigates the effect of Ti doping at the Mn site on structural, magnetic, and magnetocaloric properties of Nd-based manganites (Nd0.5Ca0.5TixMn1-xO3, x=0.1, 0.15 denoted as N-0.1 and N-0.15 respectively) prepared by the solid-state reaction method. N-0.1 attains maximum magnetic entropy change (-Delta S-max) 3.50Jkg(-1)K(-1) and N-0.15 attains 2.8Jkg(-1)K(-1) during magnetization. Even though Ti doping reduces the -Delta S-max value during magnetization, Working Temperature Span (WTS) increases and magnetic hysteresis loss decreases which are the desirable qualities of good magnetocaloric material and it makes N-0.15 a potential candidate for low-temperature magnetic refrigeration. Belov-Arrott plots and normalized magnetic entropy change curves suggest the existence of a field-induced first order to second order magnetic phase transition for both samples.

Automated summary

The study investigates the effect of Ti doping on structural, magnetic, and magnetocaloric properties of Nd-based manganites, finding that N-0.15 exhibits increased Working Temperature Span and decreased magnetic hysteresis loss, making it a potential candidate for low-temperature magnetic refrigeration.