Abstract
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 N0.1 and N0.15 respectively) prepared by the solid-state reaction method. N0.1 attains maximum magnetic entropy change (-ΔSmax) 3.50Jkg−1K−1 and N0.15 attains 2.8Jkg−1K−1 during magnetization. Even though Ti doping reduces the -ΔSmax 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 N0.15 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.
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